You don't get tunnelled frequently. You are just biased.

So let me see if I can sum up the forums here generally. Tunneling is:

• A "strategy", that you can't touch without severely reducing, if not completely removing any "play style options" for the killer.
• The most efficient and effective way to remove one player from the game, and may actually be the most effective way to outright win the game as killer.
• Completely mandatory in "high MMR" or against any SWF.
• The "only way to win" in some cases: just look at competitive DBD!
• Tunneling has been meta since the game came out.
• Removing tunneling would require insanely heavy killer buffs, or gen speeds would need to be severely nerfed for killers to "keep up".

But somehow, it's "rare" and "nobody ever tunnels" despite these being the responses in nearly every thread on these forums?

Come on.