shouldn’t that be up to the homeowner instead of the local Nazis?
Yes, probably.
However since we are talking new construction the added cost is negligible and the result is useful, not just for dumb electric cars...:^)
The code defines lots of other things, like how many outlets be room. I just see this as a useful extension to that. If it was left to the builders you would get one 15 amp outlet per room...:^)