My point was that the government already has the ability to get location data when they want it and this contract tracing proposal doesn’t make it any easier for them. (Whether or not they should be able to do what they’re already doing is a worthy debate but unrelated to contact tracing.)

Every additional data source makes it easier to collect the data; the vigilance needed to monitor access to one source is hard enough, but it scales poorly with additional sources. It's why we tolerate so much incursion into our privacy: the effort necessary to operate anywhere near "normal" and maintain data privacy is almost insurmountably difficult.

It’s not a data source, it’s decentralized and not tied to anyone’s identity.

That's what they said about E911.