I do not consider a mere few english-speaking Internet autists to be remotely the meat of Nintendo's userbase, when I see plenty of people IRL of all ages and status (boys & girls, men & women, parents, old folks) playing with a Switch these days. Mario, Zelda, Animal Crossing, Pikmin, Bayonetta, Xenoblade, Metroid, Splatoon, Astral Chain, Famicom Detective, Part-Time UFO, etc. Nintendo has a big array of games which aim for different audiences while still accessible to everyone else for the most part, and they can stand the test of time.
The problem I'm noticing with Playstation/Xbox, and modern western games at large, is that they treat vidya as a social status, a spectacle for "mature audiences", and are afraid to be treated as actual games in a traditional sense. Add various other issues such as development delays, mediocre AAA quality, globohomo propaganda, ugliness of characters, etc and it's just a big mess.
Nintendo has also the advantage to be a (and the sole) japanese console maker, thus reflecting culturally-wise on their own first-party offerings, in terms of gameplay and visuals/artstyle. Hell, it is the sole company I can trust to greenlit japanese third-parties on the Switch platform without any fuss whereas all the other big alternatives are american (Playstation, Xbox and Steam).