Something I don't think anyone has mentioned, and maybe because it isn't really the question the OP is asking and it's also kind of a "no duh" answer, are the freaking sales of the thing.

I'm shocked! I've been pretty bullish on the Switch for as long as I can remember, as have been most here, but I'm sure there was a time, certainly before its launch, when I was not quite so confident. I don't think I even thought it possible to replicate the sales of the Wii. I know we have the history of the DS to go by, but the DS came out in a time when there were far fewer personal devices to play games on. I mean, it would be years before we even got our first iPhones and androids.

And this time Nintendo did it without leaning into a primarily casual audience, which has paid dividends both in software sales and in brand credibility. I can't remember a time ever when Nintendo's next gen prospects looked so positive.