They call it “dark traffic” - ads that are not seen by tech-savvy users who have excellent ad blockers.
Not surprised that its growing. The web is unusable without an ad blocker and its only getting worse, and will continue to get worse every month.
When I was about five years old, my parents were shopping for a car. When the radio said Brand X Dealer was the best place to buy a car, I was so excited to tell them what I’d just learned.
I haven’t forgiven advertising since.