I don't have a horse in this race, I don't pug, and my lfg is closed on every toon. But, as you pointed out it is your "opinion".
Don't expect people to do what you want.
In their opinion you're wrong.
There is no guide on channel etiquette, at least not that I know of, and really how would everyone get a copy or even read it.
So in conclusion everyone is different and do not expect it, you'll get most of the results you desire and the rest well thats why you're here.