I think his stuff is cool and i enjoyed the new game, but it is pretty striking that as a consequence of writing his own engine/language, it has taken him a decade of time and many millions of dollars burned in order to ship that game. Hopefully he recoups it all, but what about all the less popular devs who will spend a decade and ship a game that doesn't turn out to be as commercially successful?
He was able to do it because he had millions of dollars from selling previous games he had written in his own game engines (one of them 3D). If other devs want to try this approach and don’t succeed then so be it, but they’re free to use whatever approach they want. I was simply pointing out that the stereotype presented in the essay has exceptions.