There are a lot of people who are concerned about rules and being nice-but-firm even when struggling against an enemy for which neither applies. Commies, for example. One of the main nice-people arguments is that “we” don’t want to use the same sorts of weapons and tactics as the commies lest we be like “them”.
James Lindsay (or @ConceptualJames) has a perspective on this:
Not becoming your enemy doesn’t mean not fighting back. It means putting down the weapons after you win.
Some of the follow-ups examine historical similarities.