This doesn't match my experience with prompting AI at all. In every professional application of AI I've seen, there are a huge number of variables and inputs, over many turns, that produce the output. We see radically different results across different engineers using AI, and that variance is not 100% attributable to the prompt. I don't even think it's 50% attributable. See sibling comment for some delineation of these additional parameters.

The correct policy is what Linux adopted. "We don't care what tools you use, provide high-quality PRs."