Well, what’s next, and how much work is it?

I'm not particularly sure myself. By my guess, I don't expect one specific profession to be "what's next", but a wide variety of professions becoming highly lucrative, primarily those which can exploit the fallout of the AI bubble to their benefit. Giving some predictions:

• Therapists and psychiatrists should find plenty of demand, as mental health crisis and cases of AI psychosis provide them a steady stream of clients.

• Those in writing related jobs (e.g. copywriters) can likely squeeze hefty premiums from clients with AI-written work that needs fixing.

• Programmers may find themselves a job tearing down the mountains of technical debt introduced by vibe-coding, and can probably crowbar a premium out of desperate clients as well. (This one's probably gonna be limited to senior coders, though - juniors are likely getting the shaft on this front)

As for which degrees will come into high demand, I expect it will be mainly humanities degrees that benefit - either directly through netting you a profession that can exploit the AI fallout, or indirectly through showing you have skills that an LLM can't imitate.

I didn’t want to be a computing professional. I trained as a jazz pianist

Nice. You could probably earn some cash doing that on the side.

At some point we ought to focus on the real problem: not STEM, not humanities, but business schools and MBA programs.

You're goddamn right.