Nintendo NX doesn't tell you anything. It isn't fun it's just cool. I am tired of picking things for the perceived image of being cool. Microsoft tried that with Xbox 360 and that is actually a pretty dumb name, but its "cool." Same with Xbox One.
Sony is consistently boring, but at least you know exactly what you are getting with PS4, 3, 2, PS.
Nintendo has not had the best record of names, but honestly there record is better than anyone else in the industry. Super Nintendo, Gamecube, Wii, Gameboy, Switch. These are all good names. Are they cool? No...but they are marketable and memorable.