Legally speaking, that may be true. But a society cannot function like that in the long run. We unfortunately experienced this vividly during Corona, when daycares, schools, playgrounds, and sports clubs were closed... and pensioners sat in large groups in cafés because they were already vaccinated long before the average person could even book an appointment.
We cannot finance an increasingly selfish and aging group of pensioners in the long term.
It is certainly a valid question whether our goal can be that a 90-year-old granny sits in 150m² while a family of four lives in 65m² because they cannot find a larger affordable apartment.
And the young people are no longer willing to give up 20% of their income for pensions... because they know that they will not get any pension at all.