Here's the post about the preference for humans even if machines can outperform in terms of price / performance: https://machinocene.substack.com/p/these-jobs-are-singularity-proof

Fully agree! I should say I'm writing a series of posts on the AGI economy and one of the next ones is exactly that there are some "singularity-proof jobs" like the ones you describe. I don't think we can all move into them so I would still except a shifting labor to capital ratio - but it's definitely not zero.