A crucial difference to the other examples is this. Compilers and spreadsheets are deterministic and repeatable, and are designed to solve a very specific task

A crucial difference to the other examples is this. Compilers and spreadsheets are deterministic and repeatable, and are designed to solve a very specific task correctly. LLMs, certainly in their current form, aren't. This doesn't necessarily contradict what you and GP are writing, but it does give a flavor to it that I expect to be important.