You could have a program, not LLM-based but could be ANN, for flying and an LLM for overseeing; the LLM could give the program instructions to the pilot program as a (x,y,z) directions. I mean currently autopilots are typically not LLMs, right?

You describe why it would be useful to have an LLM in a drone to interact with it but do not explain why it is the very same LLM that should be doing the flying.

I'm not OP, I don't know what specific roles the LLM should be using, but LLMs are great with object recognition, and using both text (street signs,notices,etc..) and visual cues to predict the correct response. The actual motor control i'm sure needs no LLMs, but the decision making could use any number of solutions, I agree that an LLM-only solution sounds bad, but I didn't do the testing and comparison to be confident in that assessment.