Agree. ThePrimeagen had something to say about this on one of his streams, responding to someone who said "The programming language doesn't matter, only the programmer." He said something like "If that were true, let's just all go back to writing C, it's pretty good. But then you'd say 'well not exactly...'"

I think they meant the stack doesn’t matter in the sense of “which stack you choose from the options available”, rather than “whether you choose a stack versus writing machine code”.

It's said mostly by people who let others make technical decisions for them. Others being either their bosses or the main stream.

That's not a good faith interpretation given the near infinite amount of options for conjuring up your favourite moneyprinting system of choice besides "machine code". SBCL is about the most arcane option you can pick and even that can work, which I think actually proves the point: it doesn't matter to any significant degree (anymore).