He didn't get off to a good start in the interview - his initial explanation of hashes and safety vouchers was full of stuttering, and it's only through Joanna

He didn't get off to a good start in the interview - his initial explanation of hashes and safety vouchers was full of stuttering, and it's only through Joanna Stern's animations and explanations that you get what the intent is. He tries to emphasize the distinction that this hash generation and comparison process only occurs when the file is about to be uploaded to iCloud, but I have to ask - who is manually choosing each individual photo that they want to upload to iCloud? Most people just toggle on the setting to automatically upload everything. I would've liked to see questions in this interview about what type of security testing they have done regarding these features, both internally and in combination with NCMEC. What I still don't get is why they do not allow the user to choose between this on-device hash generation and comparison, and the in-cloud scanning that other cloud providers are already doing.