I don't know that Steve Jobs is creative as much as he is an unrelenting perfectionist. He doesn't design things, Apple's recent success comes mostly from his ability to say "No, that's not good enough. Try again."
Maybe his confidence to do that comes from having experienced some sort of revelations or profound experiences on LSD that make "good, but not good enough" products seem even more mundane and pedestrian to him.
That's a good point, although I would argue that he is in fact extremely creative. However, his creativity isn't physically manifest. It lies in his ability to translate abstract ideas about UX paradigms into devices. You're right though, LSD could have / may have given him a new conception of what is "perfect" that led to a his particular brand of perfectionism.
Maybe his confidence to do that comes from having experienced some sort of revelations or profound experiences on LSD that make "good, but not good enough" products seem even more mundane and pedestrian to him.