Autor & Dorn ask if we've mechanized and computerized ourselves into obsolescence.
We might reduce the number of low skill manufacturing jobs that way, but I don't see how the authors' conclusion follows from their thesis.
The problem lies elsewhere. Thirty years ago American taxpayers were subsidizing employers to outsource jobs to the countries where labor costs and environmental protection costs were lower. Too few people pressured the political parties to stop the outsourcing and both parties let it continue. It has recently become a crisis.
Very gradually over the centuries, people have learned that political democracy works better for them than other forms of rule. I mean real democracy, not the oligarchic rule America has.
Much more gradually, people are learning that economic democracy works better than the various forms of economic tyranny America has. Of several advantages, the biggest one is that the profit goes to the employee-owners, not to Wall Street gamblers.
I don't know if enough Americans are capable of democracy.