Yep, at least in my opinion, there is something very wrong with the picture.
Mr. Thompson, who owns CanAm RV in Canada, specializes in modification of vehicles so as to be able to tow trailers substantially in excess of manufacturers specifications. He does this, in part, by designing and installing elaborate, and usually very expensive, hitch receivers. In short, the article is promoting his own business.
His is the only business in the United Sate and Canada that openly promotes this practice. As Mr. Thompson is also an Airstream dealer, many of the pics seen of his work also involve the towing of Airstreams by vehicles with substantially lower towing limits.
By mutual agreement (?) the once common promotion of this business on this site, mostly by one airstream owner and CanAm fan, has been curtailed.
Specifications are specifications and, at least in the U.S. of A., the consensus is to respect them for the reasons mentioned earlier.