I think my main contention about the analogy is that Mach 1 cars are sort of a ridiculous target, a thing that only happened once just as an attempt to break a barrier, more like a tech demo. Billion dollar startups are very rare of course, but they are real things that happen for practical reasons as part of the industry.

Saying that the person you replied to was looking for the former when they really wanted the latter seems uncharitable. Especially given that replacing most of the engineering department doesn’t seem to be too outside the scope of what some in the space are promising(?).

Billion dollar one person startups are a silly target too, because as we approach that possibility, society will adjust.

I know Sam Altman peddled this concept, but he's not representative of the culture and principles of the entire AI/ML space. So it was wrong of OP to attempt to use his words against the entire idea of neural models.