LD - Butterfinger is a textbook troll. You punish him by no longer responding to him. Deprive him of attention, and after stomping repeatedly with his one good foot, he will pout and grow angry.... angrier....
Just stop responding to him. He's no different than Shaggy, who is just another multi-nick for another troll. ENT, I'm afraid, is the real thing, though. If ENT is "owned" by anyone, it is by Shaggy and Butters, who both use him for the tool he is...
... which is, IMO, always the biggest irony in all these conspiracy nuts, that their obsession would only be playing right into a government conspirators, if there were any, to rob any critical camp of any credibility... Gee, if I were on the government side, I'd not try to discredit these idiots ... I'd support them and their side.
... kinda like Shaggy is supporting ENT, or how Butters is... Hmmm.... maybe that's why Shaggy won't disclose his affiliations and background. Ever thought of that?