Not sure about the US, but from what I have seen in Europe the questionnaires show that older people are actually for these policies more so than young people, especially when they are already retired and thus not affected. In Germany, two thirds of retirees answered for abandoning a public holiday while everyone else was by majority obviously against it.
that's easily "solved" by setting the cutoff date to benefit the older generation. I believe that kind of ladder kicking is exactly what's happening in the article on Denmark, and how several other European countries squared that circle.
Trump is priming to con the Republicans into touching the third rail, and they'll all lose their seats. They're already warming up by chopping Medicaid. It's stupid, unnecessary, and cruel.