Comment by diebeforei485

I don't think this is fair.

What iCloud Photos is doing for their client-side scanning is: (1) Not to your benefit. There is no positive outcome for you from your photos being scanned. (2) Mandatory if you want to use iCloud Photos.

In contrast, I presume this would be- (1) Only to your benefit, because all of this derived metadata around scenes and faces would also be encrypted end-to-end as part of the photo library. (2) Entirely optional.