Makes sense, and you raise a good point, which is that ethical dilemmas put folks in precisely that position, where they must make a decision that creates conflict between two values or principles. What I mean is, if we can agree for the sake of argument that it is unethical, what would it take for you to do this unethical thing? What other principles or values would have to be competing with this one?
I mentioned the trolley dilemma earlier, which has been around in some form or another for, I don't know... maybe 100 years? It's an interesting exercise that actually changes quite a bit when you discuss it from an ethical standpoint vs a legal standpoint.
The question is whether ground and pound is ethical. I think it's as ethical as any other thing that can injure another person. Which means yes to some and no to others.
What's interesting to me is what it takes for someone to flip. We have dudes on this forum who will very casually talk about permanently maiming or killing someone. So, where is the line for them? We have some folks (or maybe I'm the only one) who finds the idea of really hurting someone else pretty repugnant. So, for folks like me, what other values would have to be competing with this one, to turn to violence as the answer?
I think it's an individual thing, and legality only intersects with this because obeying the law is one of those competing values. There's the trite phrase "It's better to be tried by 12 than to be carried out by six." When someone says this to me, it's them saying that they would rather risk killing or injuring someone unjustly than to risk being injured or killed themselves. Some folks on here will read that and think, "yeah, of course." And some will think the opposite.