> Since they aren't writing as much of the code anyway, they may have less incentive to care about using a "better" language.

I wonder if it's the opposite (in fact blog posts to that tune were posted here more than once): if LLMs are supposed to be writing most of the code, and taking away the friction of actually writing the code, I guess it means one should pick the language based on project requirements and performance since any language is the exact same to work with.