Still, there are probably billions of searches a day. They would have to pull searches by IP address, contact the ISP to get the router associated with the IP, figure out which userid owned the router and get a physical address. They would have to do this for every search with that pattern.
It is back to school and canning season. There would be thousands of these searches every day.
You saw yourself that even the investigation team told them that they were finding 99% of the cases innocuous. No, they don’t bulk pull those extra identifying elements, they wait till they see the combination of searches they think suspicious then they pull the identifying elements.
Go ahead and be a guinea pig, if you dare....