Undermining data protection and privacy is clearly the point. The fact that it's happening everywhere at the same time makes it look to me like a bunch of leaders got together and decided that online anonymity is a problem.
It's not like kids having access to adult content is a new problem after all. Every western government just decided that we should do something about it at roughly the same time after decades of indifference.
The "age verification" story is casus belli. This is about ID, political dissent, and fears of people being exposed to the wrong brand of propaganda.