Basically, they seem to have 42% of websites with ads. The target audience of this article is advertisers and Google's own brand is based in part on their ability to enforce a lot of standards that brands like, so brands expect them to have little presence on porn sites, hate sites, sites with malicious content, etc.
The tech giants are scum. They either look the other way or hire proxies to do their dirty work like the mob.
I was tangentially involved in a project for one of them that was so shady everyone "read in" to the project was under NDA. It leaked eventually, and the "partner" company took the hit. Nobody even knew the money for it came from the big guys
Next.