I do know he was banned from JWN however I don’t know how long ago he was banned.
It was quite a while, when the AAWA thing blew up but he'd been trouble for some time before that.
He was just pure unadulterated asshole and the forum was better without his corrupting presence, although he still tried to have influence, making threats if people made non-fawning comments on his videos. He always tries to control what can be said about him.
That's why I blocked every link to his website and usually removed his videos if people posted them.