UBI would just socialize the cost which at least now, the private sector partly pays.
UBI is a yearly recurring expense in the trillions.
Lots of people would work less, (remember COVID?) lowering tax revenue.
This means higher demand for workers, who will require even higher pay because of supply constraints and high taxes.
Unlocked demand, decreased labor supply and higher taxes means inflation. Lots of inflation, specially in services.
Businesses will offshore or automate to try and reduce cost, but that will push even more workers onto UBI.
What will the new equilibrium be? Nobody knows. It could stabilize with extreme income inequality creating a permanent underclass, It could drive the United States into hyperinflation, creating civil unrest and destabilizing world security. Nobody knows. It would be a society wide experiment that would be politically impossible to undo democratically.
If you think BS jobs are bad, how about no jobs in a bankrupt United States, sliding into Venezuelan hyper inflation?
Imagine China, Russia, and North Korea undeterred and the death and human suffering that would follow.
The US may not be perfect, but the world is a harsh harsh place and people have no idea how good they have it right here, right now.
So good that professionals not only demand high pay from their employers, but think it's totally reasonable to require "meaning" as well.
Were he still alive, I would pay good money to see the author try and read his essay out loud to Victor Frankel.