A similar thing happened to me on Gamefaqs, which made me quit that site about 5 years ago now. We were discussing FFXV (then still VS XIII) and I said it was foolish to think that the game would only be released on the PS3 (this was when rabbid fanboys still pissed their pants in fear the game would be announced for the Xbox360). My comment was deleted on the basis that it "dismissed" other people's viewpoints. Other of my posts on the same forum were deleted as well, because it "offended" some people, and according to their terms of use, your comments can be banned if they offend even if they aren't intended to.
I reported posts from members telling me to "leave" and that I was "unwanted" and a "troll", yet none of those posts were ever deleted. I appealled them all, lost them all. I left and only went back to that site maybe 10 times or so since, and just for quick info.