React, python and Rust are not the "fundamentals of programming". Those are highly specific ephemeral instantiations of the more general knowledge you seem to be alluding to. They are the new COBOLs. We are not there yet, but the writing is on the wall pretty clearly if you ask me. Regular programming languages will indeed be as useful as knowing assembler in a couple of years, which is to say, pretty useful, but for many not necessary (anymore).

The main point is that these things are implementation details like assembler. Very interesting in and of themselves especially if you are on the spectrum and occassionally need to be looked at, but the knowledge is instrumental at best and useless baggage at worst. Validation is what matters. Code is useless cruft. If you can replace it all with "348348-23439 CALL(X(DDD)D)" somehow, that's great, as long as it works. I don't know why people get sentimental about wrangling syntax. We're in automation, we've been doing it to other people. We're now doing it to ourselves.

You see this point often because it is blatantly obvious for anyone that didn't build their identity around proficient wrangling of specific families of syntax.

I suspect the era of LLMs coding in "our languages" is a temporary abberation anyway. It's not necessary at all and in fact actively hampering their effectiveness. I'd say enjoy it while it lasts.