I have to quibble a little bit about 65+ paying Income Tax, because typically that is usually not Income Tax per se, but capital gains tax. That is, unless they are still employed.
This confuses things somewhat, because IT and CG, while on the same form, use very different rules and function independently from each other. With congressional approval the CG rate can jump up or down almost whimsically, but it is a huge effort to change the Income Tax brackets.
For example, with the economy in downturn this year, CG has just plummeted. No profits, no taxes. So even if someone is a multimillionaire, and ordinarily would have substantial CG, they wouldn’t pay much of anything. But to say that they are not paying “Income Tax” creates a false impression.