I don't believe Google because it could have eliminated all the ways to track people without their consent long ago if it wanted. Almost everybody uses Chrome/Blink and agrees to everything they decide. They can define and deprecate almost whatever browser APIs and behaviors they want. But it doesn't because they are the single biggest actor making use of these ways. E.g. it is known Google Captcha doesn't simply tell them you are a human, it tells them which particular human you are.