The company tried this. It fell through immediately. So they went away, and came back with a much improved version. It also fell through immediately. Turns out, this idea is just bad: LLMs can't rephrase questions accurately, when those questions are novel, which is precisely the case that Stack Overflow needs.

For the pedantic: there were actually three attempts, all of which failed. The question title generator was positively received (https://meta.stackexchange.com/q/388492/308065), but ultimately removed (https://meta.stackoverflow.com/q/424638/5223757) because it didn't work properly, and interfered with curation. The question formatting assistant failed obviously and catastrophically (https://meta.stackoverflow.com/a/425167/5223757). The new question assistant failed in much the same ways (https://meta.stackoverflow.com/a/432638/5223757), despite over a year of improvements, but was pushed through anyway.

This is an excellent piece of information that I didn’t have. If the company with most data can’t succeed, then it seems like a really hard problem. On the side, they can understand why humans couldn’t do it either.