To go someplace that's sure to get me many downvotes, I think Elon Musk is quite good at making high-level engineering decisions and the success of his companies really are in large part attributable to the decisions he's made.
He's an evil slimeball and his involvement in politics has been a massive detriment to the US and the world as a whole, but too many people go from that to "and therefore he must be stupid and incompetent and all his success is due to luck" or similar such excuses. No, unfortunately one can be both evil and highly competent - they aren't mutually exclusive traits.