it's rather not insulting anyone, rather than just the 'bad guys'. Oh well, the choice is yours...
I have no idea what this means.
is a place for discussion, which it is by pure definition, a phenomenon started in ancient Rome.
The "phenomenon" of gathering to talk didn't start in Rome. The word "forum" might have originated in Rome (or more accurately, developed in Rome from earlier languages), but people gathered to talk--in ways both phenomenal and rather ordinary--long before the Romans were even a people (cf. older works such as the Epic of Gilgamesh, The Odyssey, works by figures like Plato and Aristotle, etc, that mention such activities).
I know WIki is not good for a reference, but then this is not a scholarly discussion
Wiki is often a fine source, though certainly not definitive. Some of us, however, apply the same standards to our general assertions as we do to those of a more scholarly nature--not with citations (unless prompted or especially warranted), but with some semblance of objective fact.
And there is and should be a difference between a chat (=conversation of two) and a forum (= that of many).
Your point being....? You chose a thread that had become a back-and-forth between two people, but this doesn't happen in the majority of threads, and even if it did it wouldn't change this from being a forum. Everyone has the opportunity to voice their opinion; when these two go at it, most of the rest of us eventually choose to sit out. You felt like you had something relevant to say, so you chimed in...doesn't that make this a forum?