Re:GDPR penalty for passing on of IP address to Google by us...
by account42 on Monday January 31, 2022 @06:16AM
(#30146803)
Which is really shitty behavior from a browser that wants to claim to care about privacy.
But even without a referer it gives Google some information, even if its just that this user (ip, useragent, other identifying bits) is currently exists.
In Firefox 96 network requests to 3rd parties (in this case Google) still seem to include the 1st-party hostname as REFERER header.