It strikes me as exactly the kind of engineering call that Elon has tended to make, time after time. With zero training in an area, he gets a solution in his head crufted up from some set of pre-existing notions or points of view and then pushes to have them implemented. He will also go on to fire anyone who disagrees with him. I spoke with an engineer who worked on the gull wing doors, which the team had objected to, and not only did he force them through, he burst in on one of the finalization meetings where they had finally reached a design consensus and insisted they change the hinge. Given similar reports on his behavior regarding other products (including especially twitter), I have no reason to disbelieve this person.