For Telegram, your relying on the general populous caring that Apple is scanning their devices. I want this to be understood by the HN population: the general populous does not care about privacy concerns that they cannot see. They will not care that Apple is scanning for CP on their devices because they do not care that Apple scanned for Cp on the Cloud. The only time they would care is if Apple themselves were to physically send someone to their house, untie themselves in , and go through their stuff. Non tangible privacy violations outside of SSN data breaches are not on the mind of the general public.