They went to obscure bandcamp pages, and still play at seedy bars on a Tuesday night.
Hate fads are largely just a way for people to jack themselves off. "Ha! You like x? You're an x-er? Don't you know x is stupid and dumb? x is the the death of y! y was so much better before x came along, and ruined it. x is just the woooorst. My taste/opinions are soooo much better than you and x-ers. Stupid dumb x-ers, amirtie?" Hate fads are just a socially acceptable normie forms of alogging when you think about.