On some adults...

I believe that adults who grow up and shed the radical (leftist) politics of their youth do not shed their previous beliefs because they "just grew up." There are a ton of adult radicals out there who continue to believe the things they believed as teenagers, albeit with some changes (because everybody matures and learns new things). Adults who shed those politics really do so because they no longer have the same hope for the future that they did as children and, as a result, start to give in to the urge to conform and dismiss the worries of children. It's honestly really sad. (This is just a take I have stored in my notes app, so take this with a grain of salt. I am not an adult yet, so maybe this take is strange.)