Not obvious. You're right, there is no magic in this technology, and you clearly don't understand how it works.
There is not a single LLM currently available that is able to consistently provide a correct or workable solution when faced with a semi complex word problem that's able to be contained in one paragraph. They may nail it on occasion but they cannot do it consistently. The "problem" of figuring out if someone is a bit eccentric, has poor social skills, is actively trolling, only trolls sometimes, or any combination of the above, is orders of magnitude higher than that. (edit:) To say an LLM is capable of that kind of logical determination is completely ignoring the evidence to the contrary.