really it's more about the desire to hate things all day and stay amped to 11 regardless of target 
its also so performative and trying to one-up each other that things just end up at ridiculous levels, and then start from that level next time.
"Hey guys, what do you think about some twitch rando?"
step 1: "Who?"
step 2: "Oh, well, I just checked them out and they retweeted pewdiepie once, PRETTY SUS"
step 3: "Yeah, I just scoured through 147 hours of their streams and they said something was gay once in 2003, fucking homophobe"
step 4: "Here is my compendium of why this dude is an alt right homophobis piece of shit, who is platforming literal nazis and is also transphobic because they said they like harry potter once"
step 5: "thread locked, we do not provide a platform for nazis"