> Social security pushes back retirement ages continually.
SS is a welfare program. This is fundamentally different from a salary. Welfare programs can, and do change just before, or just after, you become eligible for them. This is fine. This is social programs are supposed to work. (Although, generally, their accounts should not be plundered to fund illegal wars.) There was no contract that you signed when you started paying into SS. It's a tax, which funds a welfare program.
Salaries, on the other hand, are sacred. Pensions aren't social programs. They are deferred salaries. Cutting pensions is a salary clawback.
If you're going to stop paying the pensions you're obligated to, you damn better have declared bankruptcy, and let your creditors - including the pensioners - pick over your carcass.