"Ken's comments are usually benign, with his comments displaying a complete lack of understanding of the featured topic, while other commenters take him seriously"
That was the OG trolling, you were wasting peoples time for laugh while they were educating you about something.
Term got hijacked and morphed into causing mental trauma to people.
One was harmless prank causing eye rolling, other mental trauma.
E.g. I'm pretty sure some people might think that "swatting" is a form of trolling.