I think it's also reasonable to assume that once they get this "detect nudity" technology forced upon devices they will then demand detections get reported to authorities. Teens will then be charged with CSAM distribution.
Let's also not forget how this technology has already led to parents getting charged with CSAM for having photos of their own kids (for medical purposes). Forget storing your baby albums digitally. That baby photo of you in the bath? CSAM.
https://www.eff.org/deeplinks/2022/08/googles-scans-private-photos-led-false-accusations-child-abuse