wireguard interfaces aren't point to point. Point to point would be much better than the point to multipoint interface model wireguard has chosen.
Wireguard claims separation of concerns but then sticks itself in the routing and packet filtering process instead of leaving those wholly to the existing established solutions.
If wg is a low layer that only attempts to do the tunneling job and leaves the routing and directory jobs to others, that seems just fine to me.
I prefer seperation of concernes.