A Crapload of people also forget that Zerk wasn't OP until all the one-shot capable weapons got added that worked on HOEEvery single dissenting opinion on Zerk needing some work is followed up by "I hate zerk and it shouldn't be OP like it was in KF1".
Problem with that is...Every perk was op. Sharpshooter could easily kill scrakes with Xbow headshots. Demo had crazy pipe bomb things to do on the patriarch round. I don't see how your opinion should count if you clearly are biased against berserker being even slightly viable at high difficulties.
After zed's got teleporting for a while in KF1 zerk was considered underpowered, and back then i had to make a vid proving that you could still gimmick stuff like gorefasts/scrakes/FP's using your speed and the chainsaw.
Now everyone goes "Oh, KF1 Zerk is OP" Because it has the DAxe/Claymore/Scythe/Etc
Now we have no really good swing one way or the other.