Well, the thing I’m concerned with is the Orwellian potential - whether they can routinely analyse the data or not, they can access it as a special project and isolate types - i.e. all Chinese people in the US. That kind of thing isn’t too tough (he says witlessly), and would allow rapid subjugation of a given portion of society.
So the live stuff, I’m not too worried about personally (what do I do online? Not much), but it’s the potential for ongoing abuse.