Presumably to implement E2E encryption, while at the same time helping the NCMEC to push for legislation to make it illegal to offer E2E encryption without this backdoor.
Apple users would be slightly better off than the status quo, but worse off than if Apple simply implemented real E2E without backdoors, and everyone else's privacy will be impacted by the backdoors that the NCMEC will likely push.
Presumably to implement E2E encryption, while at the same time helping the NCMEC to push for legislation to make it illegal to offer E2E encryption without this backdoor.
Apple users would be slightly better off than the status quo, but worse off than if Apple simply implemented real E2E without backdoors, and everyone else's privacy will be impacted by the backdoors that the NCMEC will likely push.