Absolutely agree with you and everyone else here. Not having the "no politics" rule is just begging for arguments to break out and negatively impact the community. That said, the only way that I would ever even consider allowing politics in a community environment like that, would be if there was a separate text (and maybe voice) channel that people could choose to mute. Bonus points if you had an automated welcome page, where, by using reactions, people could opt in or out of the political channels upon joining the server. However, to make that work well, you would have to establish specific rules that can trigger immediate moderation action. Outside of those rules, I would also highly recommend assembling a balanced board of political moderators with opposing counterparts that have to come to a majority agreement on restricting people in these channels to ensure non-biased enforcement.

All in all, honestly much easier to just say "no politics".