As they touch on at the beginning of the video, their goal appears to be to develop a ventilator design that can be built with a completely different supply cha

As they touch on at the beginning of the video, their goal appears to be to develop a ventilator design that can be built with a completely different supply chain than preexisting designs. That way, they aren't putting further stress on the supply chains of conventional manufacturers. They can work with components and tooling that they already fully understand. And they aren't wasting precious resources during R&D that a more conventional manufacturer can use immediately. Sure, it's a PR exercise borne out of a twitter spat. But if they ultimately aren't successful (most likely outcome imo), they haven't wasted any resources except car parts. And if they are successful, then they've increased total production potential by diversifying the supply chain, which would be a very good outcome. I say, let 'em tinker.