The sincere troll becomes the political model with just enough acknowledgement of his own insincerity to appear sincere, just enough cynicism to appear idealistic, just enough lies to appear to be a truthteller.
Your classic troll was an amoral sociopath or played one on the internet. His only cause was his own amusement. He advocated horrible and contradictory causes because it amused him to infuriate people. If he could get an entire group howling for his blood, he won. If an outraged media reported on his antics, he was a prince among trolls. Chaos and absurdity were his only agendas.
But eventually the trolls who did it for the "Lulz" gave way to the "Moralfags" sincere trolls who were sincerely terrible people. They had the same style as trolls, but there was nothing to deconstruct there. Trolling was just how they advocated for their agenda. It was like the difference between Andy Kaufman and David Letterman. When you actually have an agenda and a program, your surreal deconstruction isn't deconstructing anything. It's just a stylistic choice, it's how you present your agenda.