Urist, 10 months ago

From their main page:

(…) privacy-caring users can reduce or monitor data that is sent to Google (…)

From their dedicated Google connections page:

In general, we obviously try to minimize the connections to Google, but some services strictly rely on them and would just not work without.

I mean, sure you can ask for sources, but maybe take a little less aggressive stance when the information is so readily available. This took me way more time to write than you would have used looking it up yourself.