It is a new form of writing, though. Satire, today, is thought of as something that is known to be false, while trolling seems to be characterized by a sort of "stochastic truth" where the author is purposely ambiguous about whether they believe it or not. It lets the author of a piece of trolling say things that are clearly over the line, and mean it. It lets the author walk back the statements if they are unpopular and lean in if they are popular.
I do wonder if original pieces of satire and parody from hundreds of years ago were written with the intention of the same ambiguity of truth.