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.
Damn people, enshitifying the internet for the advertisers.
I switched to GrapheneOS which uses Vanadium browser by default, which doesn’t support any content blocking yet. I use ProtonVPN which seems to block everything.
The issue with extensions (including adblockers) is you are trusting someone with access to your shit and money buys bad behavior. So I dislike the lack of blocking there but I can understand why that decision was made.