I remember "stingers": he was the first user to trigger a Merit-rewind from theymos:
Is stingers still a merit source?
Not anymore. That's clear abuse, awarding merit for political reasons rather than any idea of quality. Only because he was a source, I effectively undid those merit sends. If he had not been a merit source, I still would've blacklisted anyone who got into DT1 through that type of shenanigans.
It could be the account got sold, but given the negative feedback he has already, I don't think a new owner matters much.