That's the point though. He is very far from perfect and has as much of a record for highly ambitious projects failing altogether as he does for them succeeding. On the positive side, his ratio of successes to failures probably beats out most people, and his failures probably haven't done too much societal harm (especially compared to the good done by his successes).

But it's still not a good idea to treat any of his announcements or ideas as anything near a sure thing. His bullshitting still has a fairly high chance of turning out as bullshit.