Even ignoring determinism, with traditional source code you have a durable, human-readable blueprint of what the software is meant to do that other humans can understand and tweak. There's no analogy in the case of "don't read the code" LLM usage. No artifacts exist that humans can read or verify to understand what the software is supposed to be doing.
yeah there is. it's called "documentation" and "requirements". And it's not like you can't go read the code if you want to understand how it works, it's just not necessary to do so while in the process of getting to working software. I truly do not understand why so many people are hung up on this "I need to understand every single line of code in my program" bs I keep reading here, do you also disassemble every library you use and understand it? no, you just use it because it's faster that way.