Jigsaw, thanks for taking the time to carefully look at skywatcher's record and present it for everyone to consider from a different perspective. Personally, I've leaned toward skywatcher being a harmless troll, but then in
this thread he makes a very untroll-like apology which did not convince everybody.
Whether skywatcher is trolling or not, I have not considered his activities to be a big deal because skywatcher is not rude or obnoxious. When I've suggested skywatcher "remain calm" it is as much to lighten the mood of those that are getting irritated with him as it is to skywatcher. I've figured if he's a troll, then he's doing it in a benign way. If he's not a troll, then he just likes to ask questions and watch what happens.
But I hope you can understand why some of us would be suspicious that he is a troll. There was one time when he posted the exact same link in General Astronomy and PX. And while not all of his threads, you listed quite a few threads in which he did not respond even with a simple thanks for having his question answered.
But you're right, given that what skywatcher is doing is pretty harmless whether he is trolling or not, we should probably give him the benefit of the doubt.