If you ever find yourself facing a comment that seems to have been purposely designed to get your blood boiling then it's pretty much certain that's exactly what it was meant to do. On any sort of unmoderated comment section I'll always assume every single person is a troll until they prove otherwise. This has served me well so far.
Slightly above the trolls are people that clearly have absolutely no idea what they are talking about, for example anyone who suggests 'just cross the tramlines at an angle, simples!' or something equally asinine.
I'm also fairly sure there's a few members there who on some cycling articles tell us proudly that they've cycled for x decades and the rest of us are idiots for not knowing how to deal with the tramlines, yet on other cycling articles are suddenly hard pressed taxpaying motorists who have never been near a bike since they were a child and proud of it etc...