I think theres some real use cases in the household department. I would love an AI that I just tell my nutrition goals (I want to eat X calories, Y protein, Z fiber, hit all vitamins) and it just generates a full meal plan for me each day. Like, I go to the store and it made the complete shopping list for me. And automatically updates the rest of the day if I tell it I skipped a meal or ate a snack.
I get where you're coming from but at least for me you appear to be looking to automate away the interesting bits while being left with the tedious ones. What I want is the opposite to what you're asking for - let me dump a rough meal plan into whatever thing is doing this giving an overview of what meals I want to cook this week and then have it go place an order with the supermarket for delivery of the necessary ingredients taking into account what I've got in the house already.
Eating disorder as a service does indeed sound like a business plan.
Some people would use the GP's idea that way, yes.
But that's absolutely not what he's describing. He wants not to think about it, that's exactly the opposite of a disorder.
Anyway, an LLM assistant is also exactly the worst technology to use there, on every dimension.
People with eating disorder do not want to think about it, they cant stop thinking about it. They create all kinds of systems for themselves, but mind cant stop - and restrictions grow.