@delroth @rcombs tbh I think the problem with this is that the road to hell starts with good intentions.

No matter how good Google will try to be about this, bad actors on both ends will find ways to loophole and abuse it. The bots will just extract the data they need to from a chrome binary/fake their JS engine to mimic a real browser anyways. Ad networks will use these techniques to further fingerprint and identify browser users.

That's without getting into the perverse incentive problem where Google is also the world's biggest (and if you believe the EUs antitrust, only meaningful) ad network, so any solution they'll come up with will not be as perfect as it should be, *specifically* so they can make a loophole for profiling users.