> we could already provide healthcare to all Americans simply by disbanding the corrupt Medicare and Medicaid bureaucracies and recouping the administration fees

Source for this estimate?

> then do the same with welfare so we can get UBI

This is nonsense. Federal welfare spending is about $20k per capita [1]. You could get that to $30k by co-opting all state spending [2]. (And only in Alaska, Oregon and Hawaii.)

[1] https://usafacts.org/articles/how-much-money-does-the-govern...

[2] https://en.wikipedia.org/wiki/List_of_U.S._state_budgets