I've seen posts here (I think even from the devs before) saying that the unreadable comment nesting here is good because it makes long arguments impossible.
But I actually think it's the reason that I almost never see double digit comments sections on this site unless there's a fight that broke out, because if you want to just have a pleasant conversation doing it on here is too annoying and unreadable. Only people who are angry enough to try to read one character per line are willing to put up with it.
I genuinely think this design encourages fighting to be the only long term interaction on the site. I've seen so, so, so few actual conversations here, and every one I've been a part of had to end prematurely because they became unreadable. Big accounts, small accounts, doesn't really matter, there's barely any talking that happens here. I think that's why so many people feel like this place is shouting into a void. I talk to people back and forth all the time on other platforms, that barely happens here because even when a conversation gets going it's just untenable. You have to be furious to put up with that.