Fair points Suity, and that's kind of why above I wrote....
In the posts you've quoted, the first is imo an extreme view (or even a sarcastic joke?). If no-one bites, then the post will simply fade away and be ignored, and the thread can continue about it's original topic.
But as you've pointed out, because of an outdated "us against them" mentality, people bite. Mickdo's post that you've quoted is an example - and imo starts off the negativity (for which he's actually been called on by others a few times this year). Similarly Dellboy's post in this thread today imo is of the type that starts the negativity and personal references rolling. It actually ends up achieving the opposite of what those two people presumably want the forums to be....
But it seems some people can't help themselves, and get personal when they can't agree to disagree... Would be much simpler here if people just post their own (differing) opinion in response to something they don't agree with, rather than getting personal with others. That's if they can be bothered posting, and if they can't be bothered then it doesn't really become a problem! Because if no-one bites at posts they've read and disagree with, then those posts will just go on to be forgotten and the forum moves along in a more positive manner...