Earlier quoted context omitted.
Yep, they have GREASE TLS bytes, TLS resume ticket, RLZ value, X-Geo header, UA header, JS APIs with persistent random values (which they do indeed use on adsense! This is why you get surprise WebGL code seemingly doing nonsense once a while in adsense ads) This cannot be a coincidence. They packed Chrome with fingerprints to work around GDPR by combining fingerprints on their side.
Doesn't that risk massive fines if proven? Like a percentage of all revenue?
They grabbed onto the wording of PII as "personally identifiable information" that information is identifiable, but not personally identifiable, so it is ok to use for ads.