There will always be naive and idealistic people who need educating, but if they keep those beliefs once they're 30+ then they're probably a lost cause.

I can understand the impulse they have though. They want some kind of solidarity with other people, society isn't helping them "fit in" anywhere. They hate the economic systems and how people are being mistreated. Instead of using some critical thinking and finding out exactly why those are, they follow the first person to hand them a pamphlet and think it's their way to utopia. Most are easily susceptible to propaganda or indoctrination and don't want to reconsider everything they know to be true.

It's similar to how I can understand libertarians and liberals, when they have the desire for freedom and personal sovereignty but aren't willing to admit that humans are basically herdlike social creatures who don't think logically by nature. There needs to be somebody in charge who knows what they're doing and is decided by some kind of test of skill or merit, you can't just think "Enforcing control over people is bad so we need to have the smallest or most restricted government possible" because that just leads to divide and conquer by actually coordinated groups with worse morals.