Not really. It's a case of Democrats twisting what Republicans have said and a troll posting the Den regurgitation. A little research and I find Senator Ron Johnson said on a radio show this month that Social Security and Medicare shouldn’t be “mandatory” programs and should be subject to yearly renewal decisions in Congress.
The Dems then start screaming Republicans want to cut or end it. Republicans have long said that people should be able to opt out and invest on their own.
That was a gift from Johnson to the Dems.