They have to do something about Buckle Up + For the People combo, and Background Player

I'm a survivor main, but I agree 100%. 

Devs don't understand about this game. I'm so sad.

Leave Background Player alone, it's my new favourite Exhaustion Perk. The amount of distance you cover with it is insane, combine it with Plot Twist and you are basically faster than Blight, Plot Twist's 50 % Haste multiplies on top of the 200 % of Background Player, which basically makes you move at 300 % speed for 4 seconds.

For the People/Buckle up are fine on their own, they just need their synergy removed.

Insta gen?

Interesting that you phrase the post from a survivor's perspective. From my perspective while playing Killer, I see BU+FTP combo fairly often (I run my preferred backpack build on all - Agitation, Awakened Awareness, Iron Grasp, Mad Grit). On another note, it is less likely successfully use the BU+FTP combo with a killer running STBFL, so there is at least one counter-perk (Lightborn being another to allow more insta-picking). I typically insta-pick (encourages over-altruism for the backpack strat), but if not, then I try to hit both survivors and chase down the one that runs towards the gens / decent deadzone area. I could see them nerfing the combo slightly, but they could mix it up / balance it by adding one DH at the 0 hookstate, that would give some old FTP+DH combo usability back while still reducing the number of chances to get the combo off.

But that's not what it is anymore, is it?

As far as I know, the bnp "only" removes 10 seconds form a Gen permanently.

So why call it insta Gen?

If I got it wrong, I'm sorry.

I just had a match yesterday where I got ROCKED by a FTP+BU 4-man SWF. All 4 had FTP+BU and OTR, 3 had Distortion and one had Shadow Step. Despite playing quite well, getting 12 downs total, they still managed a 4-man out after only 3 of those downs resulted in hooks. I got hit with a total of 7 FTP+BU saves and 2 really questionable flashlight saves. ( 1 save was done by a survivor standing on a hill, my face was buried in the side and they had to essentially stand on my head to get the save. The other was done through shack window which wasn't in my FOV as I was face planted into the locker in the corner.)

As for how to fix it:

You can either give FTP a tough activation requirement or usage limitation so it can still be a powerful anti-tunnel combo but makes it significantly harder to weaponize the combination.

Or remove the compatibility entirely. Buckle up on its own still has its place in altruism and anti-slug builds. And For the People can be reworked a little to add a 10s endurance to ONLY the person getting picked up to make it a viable anti-tunnel perk, this essentially becomes a perk to incentivize the killer to chase you instead. However if this is done, care should be taken it won't work with MFT or we just replace the problem with the exact same problem. If necessary this version could also receive an activation condition, however making yourself an easy down in the face of the killer on top of being broken for 60s is already a pretty steep price especially if you get hooked as a result.

Background Player is perfectly fine and in fact just about as good as it needs to be in order for it to be worthwhile in solo queue scenarios. Trying to go for flashlight/flashbang/pallet/sabo saves is a huge time investment that often comes with no payoff. Hell, with randoms even if you do end up rescuing them they might just die a mere 10 seconds later again. The perk is however problematic if you have multiple people on voice comms coordinating its use, where they intentionally die under a pallet every time and you can't pick up nor chase rescuers away because they can get back to you in time from a large distance. This as @edgarpoop has also alluded to is an issue the game balancing suffers from because BHVR at times doesn't account for the possibility of 4 people all using certain perks (and items/add-ons/offerings) in a coordinated way.

The solution to this issue is simple and something that would benefit the game overall: Restrict SWF loadouts such that any perk (and item/add-on/offering) can only be present at most 1 time between the members of the SWF group. BHVR had already implemented this idea for the Community Cups, they are aware that it would leave the game in a much more healthy place (while also encouraging a larger perk diversity, diversifying gameplay in turn, as well as freeing up perk design space due to not having to account for the scenarios of multiple people abusing a perk in coordinated ways).

Oh, and for something somewhat related: Enduring should also work on pallet saves, halving the 5-second stun.

For The People + Buckle Up was bound to be the next thing people jump to to complain about. It is not nearly as problematic as people think it is. The usual situation is this: You have an injured survivor you are chasing, you down them, a healthy survivor that has been following closely comes in and picks them up with FTP. You throw your hands up and get frustrated because there is nothing you can do against this, and now they have 10 seconds of Endurance that you have to wait out. ...But what if instead of using 2 perk slots to make this play, the healthy survivor would have simply taken a hit for the injured survivor? The end result would be the same: instead of having the injured survivor down, you have another survivor injured. It would be even worse actually, because that survivor gets a hit sprint and you go through hit cooldown, whereas with FTP both the survivors are still right there. The survivor using FTP would also be broken. And if they can't find a window to vault or pallet to drop in those 10 seconds of Endurance, they just get downed again (if they vault a pallet (or medium-vault a window), they get grabbed). And while there are some means of trying to play around people tanking hits, you may well end up wasting a lot more time trying to do so only to eventually have to hit the healthy survivor anyway.

Of course, there are instadown abilities/add-ons/perks, against which the FTP + Buckle Up combo can be more impactful, but in those cases the survivors also risk more. I do think that the combo is complete BS in the endgame however. A solution could be to make Buckle Up not work in the endgame. Although I would also not be opposed to BHVR simply removing the synergy between these two perks just like they did for FTP and MFT, keeping the perks themselves as they are.

In either case, one should definitely be using STBFL on M1 killers. It solves so many issues for them it's an essential pick of almost integral importance. Helps against people tanking hits, which can otherwise be debilitating for M1s; bestows a snowball potential M1s otherwise direly lack; makes the killer scarier around hooks, which M1s otherwise aren't; helps in chase, an area M1s can need any help they can get; is especially nice in the endgame, where otherwise an M1 hit could allow a survivor to make it to the gate from almost anywhere; and of course, it can combat the FTP + BU combo, because it is very difficult for the FTP player to pick up the downed survivor before getting hit, due to the short hit cooldown - they basically have to already be right on top of them the moment they go down, meaning they have to have gotten much closer beforehand, putting themselves at risk of getting hit.

From killer experience I'd say yes, however with the sheer amount of chucky I see I don't care if it's spammed against him.