I think given Elon's obvious numerous successes, despite this latest frenzy of "Musk Bad", he's objectively a great leader.
You do not get to where he is by being a bad leader. His entire job is leading, despite what people like to think (ie. that he's actually designing rockets or whatever...)
I’d say Musk is the rare combination of a great leader, who also has the ability to learn arbitrary subjects quickly enough to tell whether he’s being bullshitted.