That’s not the same thing and works entirely differently.But in the release features I read on this web site yesterday, one of the new features was that Apple has introduced in 15.2 is
In iOS 15.2, Apple is enabling Communication Safety in Messages for children. The feature is designed to scan incoming messages images on children's devices for nudity and warn them that such photos might be harmful
so it looks to me like they are still going to scan peoples photos to look for content that Apple deems to be unacceptable.
To me, that is unacceptable. Stop scanning peoples private data. Period.