I can't say I've ever seen anything quite like these 'forums.' Odd culture to be sure.
Yes, for sure the culture lacks civility and respect for others probably due to the anonymity of the posters.
I sometimes feel that being a participant in these forums is a waste of time, however there are some good discussions and that keeps me involved.
If you're going to leap to the defense of someone who in turn is jumping to conclusions about me "and my ilk," then I could gently suggest you apply your standards with a little broader brush stroke.
I am sure that there would be more civility if it were not for the anonymity factor.
At least I don't hide behind anonymity.
I can understand Canadians preferring the Canadian site, however the last decade or so of my career my business was based out of London England so I feel quite comfortable here.