John,
Let me be a little over dramatic here. You can argue that bad-mouthing is a way to bring things into perspective, but so too is armed robbery a way to get money. It just happens to be against the rules.
As far as the forum rules go, no one at BR Central is out to create the perfect forum -- certainly not perfect for all. The conventions -- rules, if you want -- some of which have come from experience, some by common sense, are just there. It is usually a mater of degree. Nudging versus bad mouthing. It reminds me of a thing we had in school. To turn the old joke on it's head, it is easy enough to say what art is, what can be hard is to say whether or not *this piece* is a work of art.
Worse, some people play games, to see just how close they can come & get away with it. More than one does that. Tim calls it human nature, and I suppose that is right. But if we just describe this and throw up our hands, nothing gets done.
So moderators deletions and infractions can be a judgement call. We have to live with that.
A second problem: what can and cannot effectively be done on BR Central or any forum, or to some extent, with any book? Essentially, it is equipment, and techniques that can be measured with tools. How would you like to try and describe, in detail, how to use wind flags, given only a written medium. Not me. But what is more important to shooting well?
Shooting well is a system sort of thing. Every thing has to be working for you, not just one or two. You're "in the zone," not thinking and calculating. Preparation counts only so that bad things don't happen to kick you out of the zone.
OK, that's a little cavalier. But almost all we can do with words, with forums, is in the preparation area. One reason the top shooters don't post is because for them, all we talk about is basic stuff that has nothing to do with actually shooting.
I don't buy that it is hopeless to have a forum that can't even cover preparation, because human nature inevitably leads to bickering and infighting. Words are still useful things, and human nature always needs controls on it to have any kind of society, even the temporary one of an internet forum.
Edit:
I'll allow we've gotten a bit off the topic . . .