I don't think there's any particularly good evidence of this other than blind optimism.

Housing and healthcare are going to get cheaper??

that's not how it works. you get better tech for the same or more work and you can work longer before you die.

if you are no longer needed, you won't be allowed to live.

makes me chuckle every time folks think humans who get to power are nice.

> I think what you are missing is that it will dramatically lower the cost of living so that everyone’s standard of living increases. It’s not about jobs

This is flat out wrong. The problem is excessive taxation and government spending beyond its means that lowers everyone's standard of living.