I don't think youre fully comprehending Dijkstra's argument. He's not saying to not use tool to help with translation, he is saying that not thinking in terms of formal symbols HURTS THINKING. Your ideas are worse if you don't think in formal systems. If you don't treat your thoughts as formal things.
In your example, he has no opinion on how to translate the idea of a "business person" because in his view the ideas of the "business person" are already shallow and bad because they don't follow a formalism. They are not worth translating.
If that's correct, then it's very falsifiable. If a businessperson says "there's a gap in the market - let's build X" they will be following a formalism at their level of detail. They see the market, the interactions between existing products and customers, and where things might be going.
Just because they can't spell it out to the nth degree doesn't matter. Their formalism is "this is what the market would like".
Having an LLM then tease out details - "what should happen in this case" would actually be pretty useful.