Well, your first point is great except we don’t have yearly inspections on vehicles in North America or anything.

I can say that, at least in Texas, we require annual inspections as a condition of yearly vehicle registration. We just don't test for the impact of headlights on incoming traffic, because... TxDOT (and the Texas legislature/governor by extension) doesn't consider it worth regulating.

Add that to the fact that inspections are done by mechanics, and they don’t generally give a shit about it

Mechanics test what is on the regulatory code. Add headlight brightness to the list and they'll test for that, too. This isn't an unsolvable problem by any stretch.