No different from any of the others, except that they add the "you know what" word to the hype.
No finish ever needs to be detailed. It will look awful and eventually fall off the car if you don't, but that doesn't mean that it needs it.
Not that it's ever a good idea to make your boss look stupid but if he ever wanted to discuss the issue rationally ask him how he knows that.
The most common answer is "that's what the salesman said." Never mind that everybody in the universe knows that car salesman will say anything to "close the deal" and are absolutely notorious for being either completely clueless or liars but for some strange reason people believe this one. The dealer may well have made more money selling this "treatment" than they did on the entire rest of the car because it costs them almost nothing and they sell it for big bucks.
The reality is that there's usually a small written brochure that spells out the real claims (which are generally minimal) and either gets included in the huge stack of car buying paperwork or gets lost altogether and nobody ever reads anyway. If he manages to actually dig it out and read it he can discuss just what he was promised for real.
PC.