What's the evidence they stopped?

The best evidence is just how comically bad their ad targeting is vs Meta

Haranrk 2 hours ago | parent | prev [-]

Information meta has on me - instagram reel viewing data

Information google has on me - my entire life

Yet meta ads are far more eerily relevant. This could imply two things -

a) Meta’s recommendation team is exponentially better (unlikely)

b) Google doesn’t use gmail and workspace data for ads

	▲	cowlevel 31 minutes ago \| parent [-]
		Meta tracks you on every page that has any Meta script, such as a Facebook like button. They're just better at tracking than Google is, amazingly, because meta plays dirtier.