You do realize that at no time did this guy say he actually was calling to end SS or Medicare?
Not once (that I saw).
From the linked article:
'Scott never specifically mentioned Social Security, Medicare and Medicaid in his call for sunsetting all federal legislation in five years, but he has acknowledged that they would be included. Scott says his aim would be to “fix,” not end, the programs. But as the New York Times wrote, it “would leave the fate of Medicare, Medicaid and Social Security to the whims of a Congress that rarely passes anything so expansive.”'