I guess it is a consequence of the Reddit migration where the habit is just keeping the old community name. But having C/Politics being US only on Lemmy.world, an instance that aims to be international (hence the name), seems weird to me.
Would have been cool to give up this assumption that everything is related to US by default when moving away from Reddit. I mean, even the canadian political news of Lemmy.ca is CanadaPolitics.
Beehaw is a locked down walled garden instance that doesn’t seem to actually want to be everyone’s go to. That’s fine, but it doesn’t mean it makes sense for most people to join it.
Midwest.social is only specific to a small region of the US.