That argument only works on people that believe they will live long enough to see those benefits, or experience them regardless of how long they do live.
In the US at least, there is no reason to believe anyone under 50 is going to “retire,” if they don’t already have the full funds to retire. Canada’s right wing parties desperately want to copy the US so they can get paid what US politicians get paid.
I’m not sure you have enough of a historical framework on population to make the claim you’re mindlessly repeating, but I appreciate that you “people” out yourselves so readily so normal humans can avoid you. Good luck on truth social or Facebook or x I guess.