You really don't understand, do you? Yang wants to finance his plan by cutting existing welfare programs and a VAT, which would indeed be paid largely by the middle- and lower classes because rich people spend a much smaller percentage of their income on groceries... That's why Yang's plan sucks and in the post I already explained why UBI will never solve the real problem of the ever growing income- and wealth gap. But if you use your imagination, we could also finance this and other income redistribution schemes by taxing the rich and their corporations. It's not that hard really.