Almost no website has full control or preapproval of the ads on it. They accept sales on an open platform and sometimes bad ads sneak on there. It's not even always possible to report them.
That one particular instance was memorable because it was very unlike any other ads on Ads before. I remember there was some official post later about 'new type of ads' but I fail to find it currently.
That particular incident was a result of explicit cooperation and not some random ad placement.
