You tell me. I didn't say anything about this.
I did, however, say that SS will be bankrupt under the income/payroll tax without any question. It cannot survive without changes. THat is obvious.
Secondly, if you object to taxpayers having negative tax rates, then you will object to the income tax. The nrst will have FAR fewer of those. Indeed it isn't clear that the number will be more than negligible.
Irrespective of reported income, people spend up to the poverty line.
Whether by spending savings, borrowed money, charity, illegally gotten gains or whatever, people will spend up to or beyond the poverty level.
Nowhere in there lucy will you find a negative tax rate. Why's that?
I can't answer that question because I don't have enough information.