Trolling is an extremely broad form of expression, and has probably been used since at least five minutes after the first ape-men held the first conversation. As a broad form of communication, it can be compared to music. Lars Ulrich, Skrillex, and a baby smashing pans together all could be said to make a kind of music. Most of us would probably agree that Ulrich makes actual music, some of us would agree on Skrillex, and nobody but the baby's mom is likely to say that the baby makes actual music. It's the exact same with trolling. For every
Jonathan Swift out there, there are hundreds, maybe thousands, of copypasta and elephant-hurling retards that mistake quantity for quality. That doesn't mean that quality trolling (or even productive trolling) doesn't exist, or is a new phenomenon.