I do agree with you 100% unethical shots are taken by inexperienced or unethical hunters regardless of weapons. And I'd agree with you, much better than years bbefor. I think in general it takes a lot more practice to hunt with a bow exception being a crossbow (not a dig on crossbow hunters) so, you do generally have less complacency with practice than the guy who only goes out during gun. Just a generalization I guess , I do know a lot of dedicated hunters who practice with their weapon of choice a lot before the season starts. I think it's better of me to blame the hunter and not the weapon choice.
And as far as running shots on deer vs. Rabbit or duck, I think the main issue is that ducks are always flying in or out, rabbits are running (though I have shot some rabbits standing still). Deer are meandering creatures in general, if the deer is running like hell, in my opinion, you wait til it stops or you let it beat you. Not saying it's right to wound any animal at all! I don't doubt some guys can take a well placed ethical shot on a running deer but, like I said before, I'd venture to say very few have ever practiced that shot. That makes it unethical in my books. Just my opinion.