I just did a google search, on this domain and “this link”. When I click on SDMB links in those threads, either hotlinked or in the clear, the page comes up. When I click on the link in the OP of the thread referenced in the quote, I get the warning.
And if you click on any link to that infamous paper towel tube thread – you know, the one that started it all – you get auto-insta-banned. Since them as do that are no longer around to warn everyone else, very few people know about this.