Yes. I think Disqus is trying to get money from the long tail of blogs that enabled Disqus in the past and never bothered to look up for the policy changes. I am sure they started with small, non-invasive ads and eventually got bigger until we get in the situation that we are today.
So even if someone enabled Disqus in the past because they seemed a reasonable system a few years ago, their blogs are now an ad farm and the original owner may have zero idea since it is a blog they abandoned years ago. Heck, my old Wordpress blog that I don't even remember the password is probably an ad field nowadays that is probably generating pennies for one of those companies.