Communicating in a clear unambiguous way doesn't actually help with using llms.

Disagree. Many people are really bad at clear communication. It doesn't matter how good an LLM gets, it will still be less effective to use it if you give it prompts with no single obvious meaning - you'll have to go a few extra rounds with it asking clarifying questions, or it will go ahead and do a thing you didn't mean it to do because your instructions could be reasonably interpreted another way.