That probably depends on the culture.

My experience from Finland is that there is always a pension reform going on, or at least people are planning the next reform. It's been recognized for decades that the pension system is unsustainable, and reforms have gradually made it more sustainable. Pension growth is now based on a mix of price and wage growth, the initial pension is based on lifetime contributions rather than final wages, retirement age automatically follows changes in life expectancy, and so on.

Older generations certainly got a better deal, and young people are always cynical. But as people age, they tend to gain confidence in the system, as they have seen it change over their careers.