And people are trying to explain to you that there aren't currently safe, secure methods of doing that, and that it's a general internet problem, not one that's your personal responsibility to solve.

Flight Rising is legally required to keep children under 13 from using its service. Do you know how the site does that? By asking them to declare they're over 13. Anyone who's proven to be under 13 is banned, but there isn't verification.

I feel like you're saying the concern among your users is that minors will trick them, which is also kinda worrying to me, in that this becomes not about protecting the underage, but providing a sense of security theatre.