The problem is that going from assembly to advanced compilers still produced the same output every time with variations based on you selecting them from a limit

The problem is that going from assembly to advanced compilers still produced the same output every time with variations based on you selecting them from a limited pool of options. With LLMs, statistics play a much more important role so you're really not in the same realm anymore. It's like going from digital to analog, things work differently at a core level.