There a point here which seems to have been missed. From the study's FAQ: > The set of websites for this study is sampled from the Tranco list of popular websites and publicly available datasets of third-party tracking websites. If that's true, then I have a lot more sympathy for the researchers: it seems they were only targeting particularly popular sites, and sites which use tracking technology. Those sites really…
I looked up my own site — the one that got this whole mess started — and I hover around number 350,000. I was utterly shocked given that I have a few thousand users, and many fewer active users. I don’t use GA, or any other third-party trackers, on any of my sites. Given that Tranco doesn’t have access to my web logs or the little Matomo setup that I self-host, I’m not sure how they claim to be analyzing my traffic i…
> I’m not sure how they claim to be analyzing my traffic in the first place
They wouldn't need to analyze your traffic to find out if you were using tracking technologies, they would just need to visit your site and examine what they were served. Companies like BuiltWith and Wappalyzer offer this kind of technology survey as a service.