CLs hate Social Security and Medicare because they’re big government programs that infringe upon the freedom of the elderly to be sick and destitute. PBPs at best view entitlement programs as a necessary evil, because they are funded by taxes. As a result, there will always be some support for entitlement cuts within the GOP.
Reactionaries, however, view SS and Medicare as a lifeline for elderly white Christian voters—their kind of people. And so, as long as the Reactionaries remain in charge, talk about entitlement cuts will be just idle chatter.
Of course, the possibility exists that entitlement cuts could be used as leverage to cut spending for poor minorities. That, in the eyes of Reactionaries, would be a win-win.