The iPad is not a Mac. If you want macOS, get a Mac.

iPadOS is much more user friendly to people who are not IT professionals. I’ve been moving less technically inclined family members to the iPad for this reason exactly.

Having a full macOS on there would ruin that. Mac apps are not built for touch. The user experience of such a thing would be awful, and redesigning macOS to work on tablets would make it worse for Mac-users.

So no, putting macOS on would not be brave. It would be dumb.