I had a funny experience related to this. I was a driver in a car with middle-age mums and one of the things that came up in their conversation was a cold case being solved thanks to DNA evidence. Then the conversation quickly moved onto exactly this, i.e. how everyone should be screened at birth so we can all identify the perpetrator right away; and then this moved to how the CSAM scanning is a good thing and should be enabled worldwide and so on.

It made me feel a bit funny: I was the weirdo for being AGAINST this, and it seemed like any arguments I put forward were dead on arrival.

Some people unfortunately are far too willing to exchange a sense of "security" or "justice" for (effectively) all of their privacy.

A large part of that, IMHO, comes from mass media outright programming people to be afraid. Fear sells, and authoritarian politicians are more than willing to capitalize on selling the "solution".