There already is such a mechanism. They can go to some unregulated country and do it. This may not be the free pass it sounds like, and does come with problem

There already is such a mechanism. They can go to some unregulated country and do it. This may not be the free pass it sounds like, and does come with problems, such as poor access to broader medical services, as well as generally guaranteeing that all US, EU, G7/G20 country regulators will permanently give you a hard time when you want approval for general sales. The question is whether he wants to sell it, or if he's just developing it for a hobby. Wouldn't be surprising to see him get some kind of test approval to go ahead in China or India...