I don't really understand these takes if we speak of the long-term. You're speaking of a world where there'd be widespread access to high quality cognitive work for a price approaching $0. The possibilities this would open are endless. We need to ensure that we don't neglect our own personal development, and fall into the sci-fi trope of an ignorant civilization relying on an machine built by their ancestors, but I don't think that's much of a practical concern.

In the short-run I think concern is much more merited because it will obviously cause some instability as the economy settles into a new equilibrium, but that's always the case with any sort of revolutionary technology. And this would almost certainly just be short-term stuff. As the value of one thing goes down, the value of other things would go up, and new things would emerge.