The data especially on Android can easily be hacked if someone has the expertise. This made me think how easy it would be for stranger to learn everything about me through my data.
Whenever i'm doing something with my normal chrome -> I'm part of the system and look / am normal.
Whenever i wanna do something little bit different, i use incognito mode and a different browser.
Isn't that pretty much what's happening with your data at google?