Earlier quoted context omitted.
I'm talking about both parents and schools: the technical solution exists. If parents/schools don't want to implement it, that's on them. This answers your objection A and B. C is also a non-probem with a trivial fix, as I showed. What we're discussing is whether age verification is needed. Based on the existence of other, perfectly fine solutions, it's not. "But schools don't bother implementing those other solution…
> If parents/schools don't want to implement it, that's on them Well that's not much of a solution is it now? More like an attempt that we all can see will fail. Harm reduction is not the same as a solution.
There is no valid argument for why ID checks are necessary if the goal is simply to get filtering implemented in places such as schools.
If instead the goal is to entirely prohibit all children from using social networks regardless of parental consent then it makes sense. It also makes sense if the goal is actually to violate privacy or something similarly sinister.