I know this is a sensitive subject to a lot of people, and I understand. But regarding recent events with Epyc Wyn, I have to criticize the forum staff for being exceedingly lenient on your bans.
You might think it's strange for me to criticize this, but honestly, letting him fester on the forums was the worst thing you could have done. You made yourselves the villains in his eyes unknowingly by continuing to give him chances. It was clear he would not have left on his own – with a long enough ban he would have gone to other places.
Even if he didn't go onto ED, he still continued to flood the forums with shitty threads constantly, which were made even worse by the peanut gallery.
I know it's in an attempt to be nice and lenient with him, especially since he might just not know any better, but there's simply no other appropriate way to deal with this kind of stuff.
Now I don't think that you're to blame for his behaviour directly, since its entirely possible that he just went to ED thinking "lolol memesite" but I think that by continuing to reprimand him lighter more often instead of just giving him the banhammer convinced him that he was being actively oppressed here by the moderators, and gave him a reason to try to get a personal army rallied.
In addition there is no real reason to be light with bans. Rules are rules for a reason. He was warned nigh infinite amount of times. On any other forum he would have been gone for good ages ago.
tl;dr you should have just banned him months ago and not wept a single tear. We would have been spared the stupid threads and he would have sperged elsewhere on the internet without likely trying to get ED involved.