Good arguments there, and for once addressing privacy-preserving age verification. I just don't like that proponents of age verification are systematically (including in this article) dismissed as authoritarians hiding behind "just another “what about the children” excuse to introduce mass surveillance and censorship". Many people genuinely want to find a solution that is better for the children, and telling them "if…
Parents need to either control the internet, or control their children’s devices and screentime. The latter sounds like the obvious option, except that Google wants every second grader to have a school-mismanaged chromebook and Google wants to mediate control of the internet, and by pushing parents to the former they win on both fronts.
I have a simple example: when all the kids have a smartphone, it is very hard to tell your kid that they cannot have one. When all the kids have a shared culture built around social media, it is very hard to tell yours to not conform. "It's okay my son, you don't need friends. Anyway the parents of all those kids are bad parents".
I don't have children, but it doesn't sound completely weird that parents may say "we should prevent most kids from accessing social media, so that my kid wouldn't be the weirdo if I don't let them have access".