It seems like Google punishing you for taking actions to increase your privacy, which not-so-coincidentally reduces the data they're able to hoover up from you.
That's just silly; it's well known that Tor nodes are widely abused by spam bots. Google is "punishing" known sources of spam. When I ran a forum many Tor nodes ended up being outright blocked, since there was so much spam coming from them.
I'm not sure how to feel about this. I run Tor relays to support the network, but at the same time having moderated a forum that received tens of thousands of signups per day over Tor and NordVPN and PIA, all of which were able to verify email via various domains,, all of which were for spam...
It's not like I intentionally targetted Tor relays or anything, we just targetted source of spam, which ended up being a lot of Tor relays. Because we were (and actually, still are) running a rather outdated version of vBulletin (upgrading is difficult) things were getting pretty dire if we didn't do ... something.