He's a degenerate addict. Poker is full of degenerate addicts. The vast majority of degenerates are entirely welcome at any poker table because they are the living example of a free lunch. So is this dude, but he is literally so disgusting that the free money he throws away on poker (that he usually stole from other players in the first place) does not make his presence welcome. He is the vile, Sterno-eating, puking excuse for a human who stinks up the room just by walking into it who even Seals With Clubs banned.
Seals is a horde of degenerates and scumbags (and I LOVE it for that), but this guy is so vile he is unwelcome even there. Ponder that.