In my opinion this and supporting the 3ds show two things: lack of foresight and hesitancy to go all in on a new console/portable.
When they've done similar things in the past with the DS (lack of perceived and actual commitment of resources) and the wii/Wii u (lack of functionality that people want), it's resulted in a lot of waiting for things to turn around at best. At worst it leads to the Wii u, which was very poorly supported and updated.
All I'm saying is Netflix, while not in and of itself a huge deal, is indicative of lessons not learned from the past, and lack of focused resources don't exactly have me brimming with confidence that Nintendo will move at a less than glacial pace to do something as simple as bring Netflix to their device.
Not supporting the 3DS would be moronic. And look at what kind of games it gets. A Fire Emblem Remake, a collection of a bunch of Mario sports games, a 2D Pikmin game and surely some other smaller games. 3DS obviously isn't Nintendo's priority. It gets a new Monster Hunter of course, but that's because Capcom is not stupid. They know they can squeeze out another game with their old engine and assets. That's what companies do. The 3DS is in its Cash Cow phase.
And I agree about Netflix. I have no idea why they wouldn't include it on Day One. I'm sure it will be there eventually. Why isn't it there on launch? I don't know. Just another Nintendo oversight I guess. It's pretty obvious what kind of people Nintendo expect to buy Switch at launch. People who own 10 other devices with Netflix on them. That doesn't make the lack of Netflix any less baffling, mind you.
With time, costs will drop, prices will drop, more kid games will be on Switch, bundles will release and there will be media Apps. At least that's my guess. Nintendo has shown time and time again they are incompetent when it comes to UI and general functionality outside of games. This to me reads like Nintendo trying to nail down overall video game experience first, the rest is secondary.
Remember how awful the Wii U was at first? There needed to be a Day One patch for any sort of online functionality and the OS was so slow that they needed to update the entire thing, it was even part of a Nintendo Direct. That's insane. I'd bet they want to avoid this at any cost for launch.