Maybe at certain times of the year, collectors get cranky, such as when they've blown through their income tax refund money.
Certain subjects hold a particular interest for them (vested interest, that is), and they naturally have intense, strong opinions.
Some guys are awash from all the stupid mistakes they made, whether selling cards way before their time, or passing up market prices that a generation or two later (today) are considered entry level prices, and they've been unable to get past that, and simply go on spouting vitriol.
You are either part of the problem, or part of the solution. Don't go away. Keep pounding those keyboards. When you come upon a squabble, move on to another thread.
Gotta go---eat. ---Brian Powell