I'm not sure I read the same article but the thrust was not about specific brands but rather specific watches and why one might increase in value rather than another from the same manufacturer, including Patek.
There are many reasons that a particular watch will increase in value, association with a celebrity, rarity, uniqueness, an artificially generated demand thanks to marketing, etc.
The author deals largely with middle of the road brands and never expresses any great admiration for patek other than to say that some of their watches accumulate in value. But he also mentions SPECIFIC watches from AP, Zenith and Zinn, hardly very high end manufactures.
As for Pateks increasing in value generally...they do so more because they are considered a commodity first and a watch second. many are auctioned new, never worn, still wrapped in plastic. But it is a "greater fool" situation. The same with Rolexes. Their prices in the after marketed are artificially elevated because of hype and nothing to do with esthetics. To some degree Rolex realized this a few years ago and started making in-house movements.
You might ask foversta or amanico, or Paul Butros, all of whom have extensive experience in covering the watch market. Or ask John Lydon or Robert Marron, who buy and sell watches, why PP's increase in value.
There are in fact some Vacherons that have increased significantly. The ones with the enamel painted dials and backs, for example.
But this article is only a "for example" one and should certainly not be taken as exhaustive.
I won't belabour thhe point except to mention another article.
And this same author in a short review of VC's World Time watch also said:
"One of the most prestigious watch manufacturers from Switzerland is Vacheron Constantin. This 256-year-old manufacturer should be considered a direct competitor to that other high-end maison d'horlogerie from Geneva, Patek Philippe."
"Just like the watches from that other manufacturer from Geneva, a Vacheron Constantin will never go out of style."