I am personally subscribed to this community to learn general things (the question about the viking funeral legal aspect is a good example), and US elections questions seems to always bring more political debate than knowledge sharing.
Has it been much of a problem? I wouldn't say I've personally seen many at all, at least not enough to consider it an issue anyway. Personally I'd be against such a restriction unless it was dominating all discussion on the community and crowding out other discussion.
I think with political literacy generally being pretty low in the majority of people and the impending American election, there will be people that feel like they have "stupid" questions, and they might not feel comfortable asking in one of the more general politics communities. It does no good to keep people in the dark, especially about politics which pretty much affects everything.
Then the mods would have the messy job of determining what constitutes "political" topics, where no one will draw the same lines as another. What is a fact of life for one person might be an incredibly political topic for another.
https://lemmy.world/post/20469782 "If Biden wanted to could he have people kill Trump since he is in office and SCOTUS said it was ok?"
https://lemmy.world/post/20291266"If Trump loses the election and flees to another country to avoid his sentencing in his (multiple) lawsuits, does the Secret Service have to go with him?"