The mods will naturally ensure that any discussion is conducted in an appropriate manner.
However, I do understand the frustration of people saying "stuff" because it's their opinion yet it's not backed up by the facts and they don't know the realities of the situation.
I mean I could say "It's my opinion that the capital of Venezuela is East Kilbride". If you (rightly) said no, it's not but I continued to argue it's East Kilbride, that might be annoying and ultimately frustrating
Of course, we all know that the capital of Venezuela is not far from Cumbernauld.......