I see this as a parenting failure, honestly. You’re not supposed to just let your kid watch whatever without supervision IMHO. If you can’t control what your kids watch, don’t give them iPads!

Does the GDPR still apply to the UK after Brexit? I thought it was a EU law.

Yeah but I think the point is that users should have a choice, then of course they are free to choose whatever they like - in your case Edge.