What? Of course it makes a difference when I direct it away from a bad solution towards a good solution. I know as soon as I review the output and it has done what I asked, or it hasn't and I make a correction. Why would I need to wait 5 years? That makes no sense, I can see the output.

If you're using LLM's and you don't know what good/bad output looks like then of course you're going to have problems, but such a person would have the same problems without the LLM...