alt Hacker NewsDumb.
Compilers aren't deterministic in small ways, timestamps, encoding paths into debug information, etc. These are trivial, annoyances to reproducible build people and little else.
You cannot take these trivial reproducibility issues and extrapolate out to "determinism doesn't matter therefore LLMs are fine". You cannot throw a ball in the air, determine it is trivial to launch an object a few feet, and thus conclude a trip the moon is similarly easy.
The magnitude matters, not merely the category. Handwaving magnitude is a massive red flag a speaker has no idea what they're talking about.
And that result of that magnitude is the paradigm of operation is just completely different. Good programmers create inputs, check outputs, and build up a mental model of the system. When the input -> output is not well defined you can't use those same skills.