Edit: This person is pretty young from what I've gathered after some reddit searching, so don't like go whole-hog and be weirdos on reddit trying to troll them or anything. This is mostly about how fucking absurd the modding of that subreddit is
editedit: also Anarchism isn't what I'm dunking here. However, post-left anything is not covered in the sectarian treaty
It was supposed to be people who got tired/burnt out from the constant shitstirring of leftist spaces who said fuck off i'm gonna get mine and turned their back on leftism.
Nowadays it's what individualist anarchists call themselves so they don't get associated with Stirner.