This sort of justification would never fly if we were talking about modding ICE vehicles:

* Illegal to replace your own brake rotors or pads, as faulty ones can cause safety issues.

* Illegal to replace your own headlights, as bad ones could be too dim or too bright and cause safety issues.

* Illegal to change your own oil, as bad ones could seize up your engine in the middle of the road and cause safety issues.

* Illegal to install a turbocharger, as that makes your car accelerate faster than the manufacturer likes and could cause safety issues.

The end result of this line of thinking leads to a million dollar tractor that a farmer can't fix when they need it most. I much prefer the idea that people are individually responsible for any modifications they choose to make to their cars.