Insulting or attacking other users, even so much saying "fuck you", "fuck [this group of people]", "you're an idiot" or anything like that while debating IS against the rules of Lemmy.ml. This goes for every political view, you DO NOT get free passes no matter if you're leftist, rightist, communist, anarchist, liberal, etc. If you're confident of your position you should be able to debate in a civil manner without cursing someone else out. I understand that debates can get heated and frustrating, hell I've debated with a good bunch of users, but you can still express that without resorting to name calling or insults.
Check the modlog, we HAVE removed replies of this nature from every political view, and even if we don't say it every time, we DO keep track of both removals per user and general behaviour even if it doesn't get removed, and too many infractions WILL result in a ban.
That said, it is NOT against the rules to present countering facts or opinions, or to have political opinions in general. Don't report comments for "being pro communist" or "being pro China" unless they have broken an actual rule, namely the ones about being civil. Don't attack or insult people from Lemmygrad just because they're from Lemmygrad or they're arguing for Marxism-Leninism or supporting a country you don't. If they're presenting their points in a civil manner (which had been the case for almost everyone from Lemmygrad), you can either read it and respond in kind with your questions or counterpoints, or just move on. People coming over from other instances is not brigading if they're mostly being civil, that's the whole point of federation.
Things people disagree with getting down voted is also acceptable, it's not considered an attack on you if your comment has a negative score, and it doesn't even significantly affect the ranking because of the relatively low comment volumes currently on Lemmy. It's just imaginary internet points, relax.
How would you implement this? Because if its by user preference, then you're back to step one, except you're dictating how a user should use their preference button. And if its by something strange like comment length, AI's reading comments, then all of those can be easily gamed
I'm sorry, but I think you are avoiding to talk about the merits of such a system based on the fact that you can't dictate how users use a system. Your solution is to simply stop caring about it, my solution would be to encourage the correct usage of the system and educate everyone about it.
You argue for a good system, while at the same time you argue that no system can be good, because you can't dictate anyone, and there are bots.
So... why even talk about this, if there is no reason for you that any of this makes sense?
How does one "enforce correct usage" of a like button? Why do you get to dictate how ppl use that button?
Alright, you don't want to talk about it. So please do stop. You repeating already answered questions doesn't do anyone any good.