There's undeniably a freedom tradeoff here as facial recognition systems expand and many corporations and governments gain access to millions of capable sensors sending this data.

I can't think of a single use case where doing this in the cloud is a worthwhile tradeoff. If you want to do this locally, sure, I can see many silly use cases for it, but as soon as you start shipping that data off to say... Amazon, things get pretty sketchy pretty fast in my book. So while I agree there are good use cases for facial recognition, I feel these should never be implemented on centralized services.