But I think it's very important to note that Elon surrounds himself with the very best domain experts he can find. He also has a reputation of deeply engrossing himself in a topic to learn as much as he can. While he may not be a domain expert when we starts, I believe he does eventually becomes one.

Theranos shouldn't be an excuse to discount domain experience because fundamentally the impeding failure of Theranos isn't due to lack of domain knowledge. It was pushing their product before it was ready and misleading doctors and the public as to the accuracy of that product.

Elon would be "pulling a Theranos" if he obscured failed launches and solicited launches without being transparent on SpaceX's capabilities.

I think its also worth to keeping in mind that SpaceX nearly went bankrupt in the process. I wouldn't be entirely surprised if the rational behind Theranos's actions were caused by financial pressure. But that's just my speculation.