Sadako has been made one of the most tedious Killers in the game

If you're effectively managing your Condemnation then you should have no need to do this. The counter to the new Onryō is simply playing how you should already be playing survivor: splitting up.

As soon as the match starts, survivors should split up and take a Tape. That way, four of her TVs are disabled, limiting her map traversal in the early game. The Onryō is a snowballing killer. If she can get early hits and downs, then the match is hers. If you deny her that pressure early, then she'll struggle to get a foothold.

Of course, one survivor will inevitably be found and chased. That survivor will gain +2 stacks, but that is preferable to the whole team gaining stacks through global Condemnation. Once that survivor goes down, the rest of the team should use the time The Onryō is carrying and hooking to deposit their Tapes, so the next in line to be found and chased doesn't gain a +2.

The match should then progress in this fashion: When The Onryō is busy elsewhere, survivors take Tapes and work on generators freely. When she's no longer occupied, deposit your Tapes.

I'll admit this is a lot of coordination for an average solo queue team to do, and one person not playing their part can make the whole game fall apart. But that is true of a lot of other killers: Plague, Pinhead, Oni, Legion etc. It's less of a problem with The Onryō's kit and more of a problem with solo queue.

This reads less like a DBD match and more like a step by step guide to beating a MMO boss.

Good luck solo queue players. If you thought knight and skull merchants were horrible, Sadako is here to ruin your games even worse.

Debatable, but they do belong in the same exclusive club of killers that make everyone miserable and want to play the game less