I'm familiar with how sanctions work wrt advertisers / publishers. It would be totally fine if a court or similar institution said "here is a list of propaganda orgs, please limit what ads they can buy in our jurisdiction" and the ad networks were authorized to find all of their shell companies associated with those named entities. But that is not what the article is advocating for.

I'm objecting to the notion that mega corp ad networks are the best organization to determine what is truth vs. propaganda in our society.