How is it any more comical than a richer guy buying a different expensive watch to impress his peers? Pricey watches are obviously intended to be status symbols above all else, whether or not you dive.
Truly rich people don't buy things to impress other people. They buy things that impress and inspire themselves, and that are not directly connected to the nuevo riche who are trying to emulate them.
First time I've heard the No True Rich Man argument. I will have to keep that one in the back pocket. Truly an innovative way to spin luxury spending as a virtue.