I think this article underestimates how weird things could get if we had low employment but a vast surplus of material goods. I don’t think a society has ever really been in that position
Totally - the (useful) economic models they are bringing are being extrapolated into very unusual territory!
I would argue that we almost are in that exact position, except rather than “low employment” per se it is more like “low compensation” or unequal distribution.
Consider for a moment our incredible material wealth. We have a surplus of nearly everything, albeit poor distribution. This is balance (keep in mind every system is intrinsically in a state of balance or temporal equilibrium).