>>This means giving the government complete insight into your internet browsing.
...how? All they know is you've authenticated with service X. And like I said, we can make legislation to say they are not allowed to keep the record of who authenticated.
Besides, let's not let perfect be the enemy of the good - in the UK all ISPs are required to keep a full year of your browsing history, and 17 government agencies can access this data(including DEFRA - the agriculture agency lol). So like....the "the government will have a full history of your browsing" is a ship that sailed a few years ago. Obviously I don't agree with it, and I think we should be on the streets of London and protesting this, but here we are as a country.
So like yeah, I get your point. But UK is particularily fucked on this point, let's not make it even more fucked with the way things currently are, the authentication can and should be done better.