Pretty much, yes.
You can take steps to reduce data collection, but thinking you can stop it is naive. You can poison the well, and make it difficult for the collectors to find meaningful correlations, but even that can give them data.
That there's no PI traffic from a specific IP, or there appears to be 700 different people at one residential address might raise a flag with those who peer over the collectors' shoulders.
And for advertisers, if all the cookies are blocked with ad blockers, inserting in-page same-server ads for security products might yield better results - because they do know something about you.
Proxy servers and avoiding https is a good way to reduce the amount of data you disclose. But advertisers in general and Google in particular is waging a war on proxy servers and http, and want end-to-end encryption under the false flag of security, while in reality it ensures that they know who connects, when. You trade privacy you want for security you don't need.