Before you try Boring Name's APK, try a wired sync and see if you get the same behavior. If it does, then the Boring Name APK might work better for you, but it's sole purpose is to get around Android's folder restriction. At this point you've got nothing to lose by trying it.
Maybe someone else will have a suggestion.
For the record, I'm using a Galaxy S22 with Android OS 14 and my syncs are working properly with only the selected playlists being copied over.