Whenever precision is required, we end up with methodologies like technical writing, or specialized language like legalese, to provide the necessary precision.
If we didn't have "programming languages", we'd end up with some sort of "computerese" analogous to legalese, and it would still take years to become proficient in using it, and there would still be either people or AI who would translate natural language into "computerese" (but we'd likely prefer human oversight over the AI anyway, given that a human that needs an AI to convert their language into something more precise is likely not capable of judging whether the output is precisely what they meant).