Apple isn’t compelled to proactively scan photos on iCloud. The scanning on device was adding a hash to each photo only readable - if it matched a known csa

Apple isn’t compelled to proactively scan photos on iCloud. The scanning on device was adding a hash to each photo only readable - if it matched a known csam image - multiple photos within the iCloud account match known csam images - the image was uploaded to iCloud Compare that to Google where only the last point needs to be true in order to have Google run any algorithm they please on your photos looking for violative images.