I worked at google some years back, in the VR team for a while. I can't speak to all of google, but at least in that org, the amount of nonsense we had to go through to make sure there wasn't some way some genius could figure something out related to personal information by correlating various pieces of data that we were storing in good faith to improve the product was absurd.

They were trying really really hard to do the right thing. Lots of people really cared about it, many to the point of it being detrimental to just making the product better.