@GossiTheDog so, ... your image analysis technology and your NPU HW are now so efficient that you don't even notice the power impact of doing this continuously in the background, and this is the only use case you could come up with?
Which means, I suppose, this is something they always wanted to do but was prevented because sending those images to the cloud for processing is clearly much worse.
Perhaps, when their privacy/security teams told them that it was a bad idea to process user screenshot images in the cloud, designers of these features assumed it would be OK to do it locally. And when they overcame this largest objection, other concerns must have seemed ... fine, in comparison.
Security/privacy teams are rarely in a position to kill off entire features, so this was most likely some kind of a compromise.
On a related note, a lesson I had to learn the hard way is to not push hard on the biggest security/privacy issue to the exclusion of others. If/when it somehow gets resolved, you look like you are trying to make excuses when you bring up the remaining concerns "but ... but ... domestic abuse".