Fortran is all about symbolic programming. There is no probability in the internal workings of Fortran compiler. Almost any person can learn rules and count on them.

LLMs are all about probabilistic programming. While they are harnessed by a lot of symbolic processing (tokens as simple example), the core is probabilistic. No hard rules can be learned.

And, for what it worth, "Real programmers don't use Pascal" [1] was not written about assembler programmers, it was written about Fortran programmers, a new Priesthood.

[1] https://web.archive.org/web/20120206010243/http://www.ee.rye...

Thus, what I expect is for new Priesthood to emerge - prompt writing specialists. And this is what we see, actually.