I would strongly discourage them from joining considering the laws around minors and social media are changing rapidly. , I don’t want to wade into those legal issues. BCH Nostr is intended for 18+ audience. I will be deploying tools in the future to future address this topic.

if you are asking this question, you haven't learned about nostr. this decentralized network is built so that YOU decide whether YOUR kid can join. you take the responsibilities for them. that being said, you know scammers are aggressive. you'd better think twice before you allow them