But then resources became cheap and it stoped matter. Yeah, the tight well designed machine code is still some sort of art expression but for practical purpose it makes sense to write a program in higher level language and waste a few MB...
But you trust a C compiler, or a Python intepreter, to do their job in a deterministic way. You will never be able to trust Copilot telling you that "this should be the code you are using".
It may suggest you using AWS, or Google, or Microsoft, or Tencent infrastructure. An LLM can even push you a specific style, or political agenda, without even you realizing it.
I hate polarized discussion all-or-nothing thinking about LLMs. See how perfectly and reliably they can translate text in whatever language. See them fail at aligning a table with a monospace font.
An llm project that can be generated from scratch every time is maybe understandable if you use very good prompts and a lot of grounding text. It is not deterministic unless you use zero temperature and stick with the same model forever. Something that's impossible now. Six months ago the state of the art model was deepseek r1.