The entire reference feels like an overreach, however, not just because of the Reductio ad Hitlerum, but also because it begs the question on the inherent evil of any use of craniometry.
> But for the slow VCs at the back who do need to be told:
>> Concluding, Dr. @Abebab notes, "It took Nazi-era atrocities, forced sterilizations… for phrenology,
Given that this ludicrous legislation was, undoubtedly, pushed for by the Home Office and shadowy security apparatus, it seems plain to me that those same groups will have access to all the data the age verification companies hold - they will know the identity of every user accessing these websites, and there is absolutely zero chance it won't be abused. There is also zero chance it won't be used as a springboard to escalate the scope.
This is yet more mass-surveillance via the handy back door of "think of the children". One of the main reasons I voted against Brexit was exactly because of shit like this - put simply, I trust the EU more than my own government. Honestly, I found the phrenology comparisons rather apt.
You're not the only one. This was also my own number one (but not sole) reason for voting against Brexit, and that's a really sad thing to have to say.
Anyway, measuring age with e.g. just a webcam is quite feasible. It's not perfect. I mean: I was well in my 30s when people were still asking for my student id, so there's an error margin. I do suppose these methods cannot circumvented by holding a picture in front of the camera or judicious application of some make-up. Adolescent boys looking for porn are not going to give up just because an age filter declines them access.
It's not phrenology, not in a technical sense, nor in the sense which the article appeals to. And that appeal is a bit pathetic, indeed, but more born from despair than the will to kill of a few million people.
[1] - https://twitter.com/clancynewyork/status/1535686305438478339