And now my privacy-respecting browser knows where the ads live and blocks them? I’m just not seeing how this isn’t round 428 of Ad Blockers: Cat-and-Mouse Boogaloo.
The reason why ads aren't already served like this is the risk of fraud. The publisher can just make up claims of millions of impressions with no way to disprove it.
I assume Trusted Server comes with some mechanism to prevent this. That's what the name means: The server is trusted by the advertisers.