You might be right, but I have heard that song a lot of times, python, java, ml, pascal, obscure webdev.languages, AI will do it, typescript, etc etc etc

I'd go with a better python than rust, you can put that "once in a lifetime asm optimized memsafe multi threaded code" in a package and just use it from python. But python has GIL and you can't just remove it so who knows what will be the next shiny thing? Probably several languages, like for easy peasy stuff up to hardcore multi threaded memory safe stuff. Gotta push us oldtimers out in some way, right :-) ?