But at least right now it won't block you from viewing websites as an example. If this becomes commonplace then most websites with accounts will do this kind of identity detection.

Why wouldn't they? Think about it. If people's real identities are involved then they're less likely to be abusive, because everything tracks back to them. But it also means that websites like Facebook and pornhub might not let new users in without that kind of authentication.

in the US we had laws protecting the privacy of mail going through the postal service, and conversations over the phone. now facebook and google know our every thought and move.

new technology is like the wild west for govts and corporations, and you can hold a larger crowd hostage with a gun than you can with a knife.