Google Analytics is not spyware, it just counts users, OSes, browsers, page views. It doesn't identify users personally ( you could if you knew the only person with a Chromebook in a city, but that's about as granular as it could get).
As can be seen by any statistic - be it the download/rate/comment ratios on any of the mobile app stores, or the Chrome extension stores, the vast majority of users will stay silent. Wanting to know a tiny bit about them is understandable.
It's naive to think that Google - an advertising company whose business model depends on stalking every one - would offer such an advanced tool for free if it wasn't spyware.
