It seems very hard to maintain the belief that LLMs are useless in the face of the fact that millions of people are using them. It's very much "nobody goes there anymore, it's too crowded"
But for math tutoring? If you claim LLM math tutoring is demoware, you're very clearly telling on yourself.
In fact i'd say in general anything that LLMs produce that can be "statically checked" in some way, can be fine to rely on. You most likely need more than a chat interface though, but i think in general it is plausible for such solutions to exit.
[0] hopefully it wont end up always failing, ending up in an infinite loop :-P
(See also Newton and alchemy, and the list goes on.)
It helps that what they're discovering matches my own personal experience as well.