One is matching a face--yes, concerning, and I don't like it but IMO Google has had a much worse privacy reputation for quite some time--and the other is reporting private data to law enforcement and potentially abusive parents. It's quite a bit different.

The difference can also be seen from a customer service perspective. One is a feature that lets you sort according to which friends you were with. The other is a feature that puts you in jail. No thanks. Not gonna pay money for that.