1. A higher bar for comments based on age of account and karma.
2. A limit on the number of comments from any individual account, e.g. each account would only get one or two comments. The idea being "get out your point as clearly as possible in one message", because you won't have the option for endless back-and-forth (and potentially escalating) debate.
To be fair the corollary is that you already know what you are getting from this place so probably sticking to purer tech topics on a tech accelerator's forum is fair enough. Interesting the these things overlap of course as I suspect will become ever more common.
Watching any post that touches on Covid over the past year and a half -- which should at least have aspects that are not inflammatory, unlike your examples -- I've become convinced that the answer is simply "no". It may be better here than other places, but it still isn't good. And it's not what I come here for. I don't engage with them anymore and I would prefer a world where they weren't submitted here at all.
But I've also personally used a couple new separate accounts to comment my experience & knowledge on topics that I wouldn't want to be google able to myself, even if I share that with my IRL friends.
Maybe there could be an option for 'private post' that you can still use your main account so mods can still look at coordination across accounts etc but the public facing handle is not tied to your public profile.
Probably would still encourage the type of comments most in this thread are against though that's a hard problem.
You may already know this, but you can turn showdead on in your profile, which lets you see dead posts easily.
I will say that 95+% of the time the dead comments I see have earned their status, but I could see a case for decreasing the grayness for downvoted comments or making it a configurable option.