To push back on this a bit. If two yet unknown people, "an Altman" and "an Ilya", both applied to YC to start a company that builds and sells AI models, guess who would get funded. Not the guy who can't build AI models.
I find it bizarre that the guy who can build is suddenly the villain-nerd who can't be trusted, and the salesman is the hero, in this community.
In reality you need all of them, and they are all separate talents, but things are clearly unbalanced.