I understand the opt-in rather than opt-out, but does disabling Ads Personalization [1] not do what you're asking?
No, a Google account shouldn’t be required.
Why not? How else would Google know who not to track? It's not like they can identify you and remember that preference without a Google account...
Re:Google’s GDPR Workaround
by superturkey650 on Wednesday September 04, 2019 @02:51PM
(#20880249)
Yes, that's why targeted ads shouldn't be a thing unless it's opt-in (not necessarily my opinion but it seems to be the point the parent was making). At that point, to opt-in you can create a google account. Currently though, Google will attempt targeted ads on people without a Google account by trying to identify and track them through other means.
Ideally you would have site-specific or content-specific ads normally and personalized ads if you created an account and chose to opt-in.
They're not choosing to have targeted ads that share their info around the web and cause someone over their shoulder to infer things about them.
That's the point -- we should have that choice. And the default should be "no".