Yes, you're correct. And in fact I had a bet with a friend ten years ago that Tesla would in fact still be around today. He didn't think they would. I just won that bet in January. :)
The shame is that the parts that are innovative, like the engineering of an electric car, the design, the interface, and the battery technology, are all going so well, all things considered.
Whereas the parts that don't necessarily require innovation on a major scale, such as management of people, the operation of a manufacturing line at scale, systemic quality control, and safety and health—are being done (by all accounts) not so well. These are the things that are far more difficult than the technology and innovation precisely because they are so much more complex, and require a different mindset. For the same reason Musk is so good at engineering, it is not totally surprising he is not so spectacular at leading the human systems required for this new pursuit. Again, by all accounts.
And the sad part: these are the parts that have been done before, in similar situations, at similar scales, with similarly new technologies, without drastically different requirements or problems. Having that experience available to you and not using it is not exactly wise.
All that said, I think he'll learn what he needs to learn, get it done anyway, and will not fail. Making this point of efficiency at this stage pretty moot. I realize that.