The people saying what's the point of having it on there when so many other devices do are truly missing the point. THere are still people who don't have some kind of netflix box, or maybe they want to buy this and set it up in a room that doesn't have it. Not having simple things like this is just another knock against a high priced system that is supposed to provide the home console experience.
Even if you have another netflix box, Switch is connected to the TV already. It's a matter of convenience to have access to basic features and apps without needing to change the device everytime. It's not a game breaker, but it creates a bit of discomfort.