It's no secret that people tend to be more leftist when they are young and more conservative when they are older. The common assumption by the establishment is that it's just a "phase" that people go through before they smarten up.
Which is incredibly patronizing.

“Monsieur, my son is 22 years old. If he had not become a Communist at 22, I would have disowned him. If he is still a Communist at 30, I will do it then.”
- Georges Clemenceau