It is even worse than that. Google nowadays still uses this argument telling you that only this way they can optimize your ad placement towards Conversions.
While at the same time telling you (in their documentation) that due to script blockers and gdpr they just estimate (using more fancy terms and talking about ML & AI) the Conversions they report (and use for optimization).
They basically tell you: Trust us - we estimate your success in the best of your interest. As if they were a neutral party in that equation.
