Seriously, the biggest and most prevalent danger to kids online, is unregulated marketing directed towards them building unhealthy habits and potential loss of self worth due to unreachable ideals potrayed in advertising.

Not any of the three points you bring up there.

Those superpredator bogeymans you make up here, have to actively seek you out and have a limited budget in comparison.

State actors are after everyone, not kids primarily. In the current state of thing I would have no qualms just shutting down X, Facebook, YouTube Shorts and TikTok live for starters for all.