Being a jerk is extremely subjective - someone could brand you much worse than that just from a polite disagreement from your side, that they don't want to deal with. Aside from anything else, this is a highly "techie-y" space with a ton of strongly held opinions and ideals, and misunderstandings when communicating/discussing them happen. A lot. It will keep happening. People will look like asses without necessarily doing so intentionally.

Now, outright trolling, spamming, shitting on discussions with obvious bad faith participation, consistently derailing unrelated threads with one's hobby horse, obvious flamebaiting and so on... great. Reporting and removing more of that should be a priority everywhere.

Banning politics from any non-political community that can be persuaded to do so also sounds like a great idea on general principle. Politics is poison (particularly what passes for it in the US), and it would be polite to not shove it down the entire fediverse's throat. Every geographical sub is politics, every news sub is politics, there are dedicated politics and politicalmemes communities, and still it's fucking everywhere else also. Asklemmy and NoStupidQuestions are full of thinly veiled soapboxing (which leads to a lot of awfully stupid questions). People who want to JAQ off to politics can easily make their own community for that (that way, the rest of us can block it, as intended), or else keeping it in their pants would've been kinda polite, idk. Seems odd to insist on posting political stuff everywhere.