This is pretty much what I try to do. I avoid people taking photographs of me altogether or if they do, I request them to not put them on Facebook or anywhere on the Internet. It usually works if you ask kindly.
How would a user be forced to upload all of their photos? I have (allegedly) unlimited storage with Flickr, but I manually upload the photos that I choose.
They're not forced to, they're tempted to. And most people will. From the presentation, it looks like as soon as you take a photo it's uploaded and backed up on Google's servers.