That actually isn't weird at all. People treat "politics" as an epithet for "controversial politics", but in reality, almost everything in society is political – relating to power structures, the distribution of status and resources, and how those factors are determined. What you're getting at, of course, is that Republicans have shifted the Overton window so disgustingly far to the right that "everyone is welcome" in a classroom is treated as a controversial ideology.

We're constantly conditioned to think of the status quo as apolitical in nature (it's just "normal" and the people who want to change it for better or worse are "the politicals"), but it is and always has been, and it's why we've needed so desperately these past several decades to remain politically engaged to protect what we want and to change what we don't. Now? Who knows, but we still need to try.