Earlier quoted context omitted.
Couldn’t it just be for edge server location determination? Not a Google fan, but at their volume of traffic seems like it could be something they’ve optimized for.
Could be! But they could have said so. And they could also have said that the information is not correlated with anything else. All we know is that they have, very carefully, written something vague that they could do pretty much anything they wanted with. And we are left with the question, why would they do that?
Probably to not have to consult the lawyers every single time someone creates a new analytics aggregation.