- Chrome is still shipping with 3rd party cookies turned on by default (Safari and Firefox have them off, by default)
- Chrome usage stats are sent to Google including button clicks. This is admitted in the Chrome privacy policy.
- Chrome on mobile automatically shares your location with your default search engine i.e. Google
- Chrome sort of forces a login …which shares browser and user details history with Google
- Google redirects logins through the youtube.com domain to enable them to set a cookie for YouTube as well as Gmail or whatever, every time you login. Naughty stuff.
So the stated reason for the change doesn't appear to make sense, suggesting that something else is going on.
It amazes me that more people aren't calling Google out on this.