Sure, in a context in which you're solving a technical problem for me, it's fair that I shouldn't worry too much about why you're asking - unless, for instance, I'm trying to learn to solve the question myself next time.

Which sounds like a very common, very understandable reason to think about motivations.

So even in that situation, it isn't simple.

This probably sucks for people who aren't good at theory of mind reasoning. But surprisingly maybe, that isn't the case for chatbots. They can be creepily good at it, provided they have the context - they just aren't instruction tuned to ask short clarifying questions in response to a question, which humans do, and which would solve most of these gotchas.