In my view it's more that: electrical safety has advanced to it's current "version" and allowing these panels is a regression in safety. There's already plenty of products/theoretical-products that are banned and/or tightly controlled for electrical safety sakes (suicide cable is the poster child).
To use your car analogy, we're not banning vehicles. We're disable one of the airbags when enabling fuel economy mode.
To use your car analogy, we're not banning vehicles. We're disable one of the airbags when enabling fuel economy mode.