Know what? I'll bite. Let's have a civil discussion how this is either actually beneficial to 'save the kids' or, on the other hand, this is just the first step of a process designed to force full surveillance at the OS level, now that people are finally starting to care a bit about their privacy.

If it is to do something to keep the kids away from harm (you mentioned to reduce manipulation of kids) how does spinning 3 wheels with numbers, attached to no verification whatsoever, help? This is that useless 'Are you over 18?' pop-up all over again, where you just click 'yes' and move on with whatever it is you wanted to get away with. So, on that front, unless this is designed to put undue extra responsibility and work on the OS developers, this makes no sense (of course, I'm more than willing to hear you counter this theory).

Now, if it's just that first step, the politicians trying to see what else they can get away with pushing on the population, one step at a time, next they will add 'the OS will require a picture of the user holding an ID to confirm the entered date of birth, but it will remain local, the OS will just reply yes or no to the apps requesting the info'. Then it'll be 'will be sent to a government database for safeguarding', and so on until you no longer can get away from not showing your face and ID to everyone out there.

Anyway, which one makes more sense to you, honestly?