I'll keep quoting
a certain article here:
The issues Nintendo's had with online is a main reason why I've come around to the idea that Nintendo as a organization staunchly supports the idea that "video games are toys, and experimentation's the way to go". While Nintendo may have considered the online infrastructure a diversion at best during the Wii era...
...Fact of the matter is, it's gotten to the point where online is nigh-essential for a major company to thrive in the industry. It's kind of telling when NSO is the third Nintendo network service in 13 years. Sure, Nintendo doesn't want to implement a lot of online stuff because loud voices within Nintendo fear that strangers talking to kids and other incidents will harm the online at large (which makes sense). It does miss the point though that nowadays people tend to use Discord and other stuff if they wanna talk in game. And often not the in-game voice chat where a stranger screams bloody murder and all kinds of curse words when (s)he dies in game.
The point about Discord is IMHO a big reason why Nintendo's mobile voice chat has not taken off as Nintendo hoped. Mobile voice chat makes sense given the Switch's portability... buuuut it's really undermined by Discord, Fortnite supporting native voice chat on the Switch itself and the fact that most people don't really play concentration-intensive multiplayer games when on the bus. It doesn't help that as you said they don't have much of a strategy re: configuration and preffered ways to play.
Introducing new ways to play can be amazing, but IMHO Nintendo should at this point have a fall back in case there's another failure. Especially since Nintendo only have a console line nowadays, not two. With that the back-catalogue becomes more important - and as such, I'd honestly argue that Nintendo should focus a lot on improving its online infrastructure and making sure the back-catalogue is more reguarily updated on NSO. Also, they should keep an online service going and not change it with every console.
While the article is IMHO too pessimistic regarding Nintendo's capabilities to change and adapt to the wider video game landscape, it's certainly worth a read.