Let me preface this with, "this has nothing to do with camping/tunneling or using certain perks". Yes camping/tunneling sucks but people will still do it :( oh well. And as for perks, they're in the damn game, so they are all fair use, learn to play around them.
Anyways, I just really wish the Devs would monitor the end game chat more and ban people for toxic behavior; whether it be calling someone horrible things, or telling them to learn how to play, or calling them a cheater because they got a 4k. If you can't just play the game and enjoy it, don't play. Go play a single player game and let everyone else enjoy this one.
When I play survivor and I get wrecked by an amazing killer, I tell them how awesome they were or ask them for hints. And when I play killer and have a super sneaky or amazing looper survivor, I tell them they were way too good for me and congrats to them.
Honestly, they should just get rid of end game chat :( It's fun to talk to cool people and gain friends, but a large portion of the community is toxic and some people just ruin the game.
Just my opinion