I think it boils down to each individual's personal manners and character. Some folk are naturally pugnacious and confrontational. I expect in real life they're a bit prickly and readily bite back when they don't agree with a comment, QUOTE SENOFOU.
My experience is different,i never judge people on what they say on this forum, because the internet is in some ways a a poor way of communicating there is no body language with any of these posts. KEITH A for example i met him he was a pleasant man who loved singing and trad music was courteous and polite in person, different from how he came over sometimes on this forum