>I think what he brings to the table is Marketing and not really engineering

How could you know this? Engineers who have worked for him and spoken publicly generally say he is for real and does contribute to engineering. But more generally, a CEO's role is to be the one who decides on overall direction and strategy. It was Musk who decided to go all-in on rocket reusability and direct the resources of the company to that, despite the fact that others who had tried failed. He did it because he knew enough engineering to see a path to success. That's how he matters. He knows enough science to call bullshit on people who are stuck in their ways and say things can't be done. Others still have to do 99% of the detailed engineering work, but he is far from just a hype man.

This is also relevant to a statement Musk has made several times that I think people miss the importance of. He insists that people who oversee coders also need to be good coders themselves. NOT because they are going to be doing the brunt of the coding work, but because they will be able to better direct and assess the work of the people who are doing that work. They will have an intuitive sense of what approaches are possible and impossible, or efficient and inefficient, and guide the team to execute, and trouble-shoot with them when problems arise. To the extent Musk is an "engineer" that is what he is doing: helping teams think through problems.

And I totally hate the edgy teen persona too. It's embarrassing a lot of the time. I used to interpret as him needing to blow off steam because of all the stress from his day job. Now, I don't know what the fuck it is. Real immaturity, I guess.