Too bad the people who write these articles will just ban, delete or ignore anyone that claims otherwise or doesn't go along with their stereotype of internet users, it's like going onto the flat earth society and posting and posting lots of photos of a spherical Earth, it pisses off people who are easily riled to begin with, no more.
The OP has a much more concise definition of what a troll is, which I would agree with. Many/most people will define a troll as someone who gives an extreme view that they do not agree with, and therefore it is claimed that trolling happens much more often then it really does.
Edit: Onion News Network would actually be what I define as internet trolls because they post completely fake news stories as if they're facts and stupid people completely fall for it.
IMO the Onion is satire and meant to make people laugh and not meant to be believed.