I don't see where the assertion made in the abstract, that current labor demand stagnation and wealth inequality is due to AI, is evidenced in the body of the paper. And I'd find it very surprising if it were true.

Anecdotally, I'd also argue against the thrust of the paper. New roles are being created as a consequence of AI. One could argue that a significant proportion of data science is a direct consequence, for example.

That's not to say that it won't be problematic. It's not at all obvious that the occupants of jobs that will likely disappear through AI automation (call centres and drivers in the immediate future) are the people that will be employed in the new fields. However, this strikes me as a version of the "Detroit problem" rather than something new.