Most innovators are.
Rockefeller, Edison, Marconi, Bell, Vanderbilt, Carnegie, Kellogg, DuPont, the Wrights, and the innumerable others were all wankers. But that goes with the territory. Invent something new or go a different way, and you have to be a bit of a wanker to keep the tossers and parasites at bay, keep people from stealing your s4!t or shutting you down because you're busting their hustle.
But one thing I will say they do over the current "innovators" like teh googlezboyes and Facebookkid, is they actually built stuff, heated/lit homes, cured diseases, fed people and did things that improved your fellow traveller's lot in life. That's way more that can be said for cheating the market, posing your relationship status or surfing the latest pr0n.
Musk's way gets us closer to getting off this rock, as a step to the stars, where we MUST go. If he's a bit of a tool, I'm OK with that, because he's in good company.