Google's identity signal that they have given themselves access to works across cross-domain and cross-device. First-party cookies do neither. I would strongly

Google's identity signal that they have given themselves access to works across cross-domain and cross-device. First-party cookies do neither. I would strongly prefer that everyone restrict themselves to the capabilities of first-party cookies. But it's still true that Google is not holding themselves to the same restrictions that they're trying to enforce on other parties.