We are growing too confident in our lolcows and their abilities lately. Dex is a class A edgelord who chooses to torture a goldfish and act like he is big and bad because of it. He won't do anything because this is his where he gets his kicks.
No, I don't think Dexter has actually done anything dangerous, or will actually do anything that terrible. Writing a nasty letter to an unrelated internet hosting company is going to be his greatest success in life, and he knows it. Like a whiny old woman who gets table tennis balls banned from a toy aisle because it's related to drinking. That's his big win. Bitching, like a bitch, to a bunch of bitches.
But I'm also not putting it past anyone on that site to have said something treasonous they'll eventually sincerely regret. And I bet the edgelord persona melts away like a marshmallow in a rainstorm when someone in a dark suit and sunglasses knocks on their door.