The tweet also reads a bit off to me too. Carmack positions himself as if he is a some sort of a litmus test for being a great and successful programmer, which I don't doubt that he is but it's a bit strange. Egotripping.

This has gotten a ton of upvotes, then a ton of downvotes. Yet no one has yet answered the question. If you are downvoting, presumably you believe there is a point to linking to Carmack’s tweet. That it somehow adds more value than the alternative. So please explain why. Like I said before, I am asking genuinely.