he got banned for being racist/homophobic.
My favorite thing about that post is the disconnect between the accusation and the evidence. The only thing I did wrong in that entire chain was telling someone to go to off-topic with their bad language instead of deleting it (rule 5 is to keep edgy stuff in off-topic), and even then the dude is using his bad language to tell someone else to be less racist. Irony, bittersweet.