So is no one questioning that maybe the search subsystem talks to the "website score" (or whatever it's called in Google-speak), to determine if it's relevant?

So is no one questioning that maybe the search subsystem talks to the "website score" (or whatever it's called in Google-speak), to determine if it's relevant? And perhaps that score is influenced by how many valid ads there are. Maybe the score is simply highly-correlated with a site that shows many google ads? Think about it, someone that shows Google ads happens to also be very very keen on optimizing everything that affects their rankings in Google searches. Hey Google, perhaps "displaying many Google ads" should be a negative on page-rank?