Except he charged money for that "optimism". It is fine to push your team to achieve ambitious goals, it is quite another to publicly declare those ambitious goals as if they are fact, which he did when he said Tesla would have cars with no steering wheels in 2 years. And he is welcome to believe in his objectives, just not charge money for them before they are real. I also don't fault Elon for missing deadlines, everyone does, especially on something as ambitious as autonomous driving. But again, you cannot charge money and then just go "oops, I was optimistic, I meant next year", take more money and then go "oops sorry again, I meant next next year".