Maybe he's just repeating the same Roadster business model? Small quantity (can hand-assemble if necessary), high margin, prestige product to help keep money coming in for the rest of the business.
Sure that worked well for Tesla early as they were growing, but this is a company that is already shipping three vehicles to the consumer space.
They shouldn't be trying to do "small quantity" work , and instead should be focused on going wide and getting those Model 3's out the door to the those that have already bought in to the Model 3.
Splitting your attention is going to introduce more problems, but so is not having money or having to beg for money every year or two.
Maybe the Roadster reboot should have been scrapped, but this has clearly been in the works before Model 3's production scaling issues. With a large company you have a diverse group of talent; you aren't going to have your designers sit around while you are tuning capacity. Hopefully, this helps compliment their growth.