Do we really need to question people, why they post here? Kanisatha isn't impolite or rude, he just hangs out here, giving his opinion. That's what forums are for. I'm still hanging around the BioWare forums, despite Not being invested in their newer games anymore, because I like the people there.
There is a certain group of posters here who have been bemoning the game for literal years and telling everyone who will listen they won't play it.
Telling others something sucks when you don't even have experience with that thing is rude. Especially when it seems like that is the only reason they post here.
When you see Swen get teary eyed in the pfh talking about how much he loves this game and then come here on the offical forms to people trolling his team, for literal years, yeah its going to make some posters here upset.
If posters who haven't even played the game have a right to troll these boards, than others have the right to call them out on it from time to time, imo. Your statement "do we really need to question people, why they post here," cuts both ways.