I had a similar debate with a friend of mine over a age verification law recently passed in Brazil. It mandates age verification for social media in order to restrict teenagers and children access to adult content, for example, or any other content that violates teenagers rights.
The law in question (PL2628/2022) doesn't mention CSAM or sexualized/erotic content depicting children or teenager by name. It's broader than that, it mentions that any content deemed offensive to children/teenagers, or that violates their rights as defined in the Estatuto da Criança e do Adolescente, should be removed by social media.
My friend supports the law because he thinks it will stop 99.9% of the bad guys looking for CSAM on the internet because he believes they get their content from Instagram. I tried to explain to him the law won't do shit to stop the bad guys but instead just add more surveillance to people who aren't doing anything wrong, but he doesn't want to accept it, and even called me out saying I look like a defender of the bad guys, simply for the fact that I don't think mass surveillance and age verification of people is enough to stop wrongdoers on the internet, or to protect children.