If humans can prove that bespoke human code brings value, it'll stick around.
Value to who, and which type of value?
Will that defining value be purely economic in nature? While it be purely defined by mega-corps, and their perception of value? The market moves, the money flows to those which control its direction.
We already see it today, with some firms literally forcing people to use LLM coding tools. The stories abound, of simply being forced to use whatever it spits out. Value, is often designed by cost, and code maintainability 5 years later isn't an immediate, quarter-profit induced concern.
It feels like you're glossing over a lot of my point.
In terms of new coding languages, it's rare to see new coding languages gain any traction, rust is the only recent one I know, and it's had a larger backer behind it since its release 15 years ago. It was supported in house for almost a decade before even seeing the light of day.
Will that happen now? And created (or at least managed) by a human? If not, what would a new language look like? Would it be human maintainable? Understood?
To me, this goes right back to the classic "buying a car with the hood welded shut". No way to maintain, repair, or even evaluate the quality of the thing under you.