alt Hacker Newsit makes sense in terms of grooming. Most parents want to deny their children agency until they're no longer minors and giving them the internet massively undermines that idea. You're plugging your child into a stream of information that is mostly a sewer of misinformation.
The school system is a sewer of bias with 90%+ of teachers leaning left. Decentralised media is the only chance many kids have of hearing both sides of the story.