What is it with Alice in chains fans??

Okay so for context I was on a grunge/alternative Facebook group and I ended up leaving because the Alice in chains fans were so awful to be around, the amount of abuse some of them throw around at not just me but other people too, but I’m also curious to know why the fandom is always bashing on nirvana/pearl jam/soundgarden?? I’m genuinely curious to know because it’s really gross some of the stuff that gets thrown about in the grungesphere