You could block account.google.com (or google.com) if you don’t use any google services or expect anyone on your network to use any google services*.

* I think search still works without an account, but I don’t think anything else works that way these days. The last I know was YouTube and I get a “sign in to confirm your age” on YouTube on most videos I try to watch without being logged in.

As much as I'd love to do that, it might be a bridge too far...