The biggest problem Musk has is that he is a nerdy engineer who thought it would be a good idea to interface directly with a general public. I think his biggest failing was not hiring a top-shelf PR team to handle his communications.
There is a good reason companies keep engineers in the back room away from customers. They are masters of machines, not people.
How is that his biggest problem? He has no impulse control, or no desire for it; he lies incessantly to further his interests; he's a horrible manager; etc.
He lies incessantly because he is a nerd with fantastical ideas and enormous resources. But regular folks won't see this because they put their regular self in his shoes to decide what his motivations must be.
If he used a proper PR team, they would filter most of this out, and shape his communications into a form meant for regular people.
The things you mention may be the problems he thinks he has, but none of them are a problem from our point of view. From our perspective, his problem is that he doesn't hide out in the server closet like a nerdy engineer should.
There is a good reason companies keep engineers in the back room away from customers. They are masters of machines, not people.