It was a very smart concept that clearly made a lot of sense to a lot of people.
That said, I can't ignore the shoddy performance that was there from the very start of the system's life - I realize that making it a portable gives you quite a few limitations, but it really felt like a disappointment as someone who's only interested in playing on a TV. While Nintendo's had some good games on there, I haven't particularly enjoyed their direction of making more and more games open world - they've in many ways lost sight of the more focused, polished experiences that they used to specialize in. Like, something as straightforward as Fire Emblem got bloated to fucking hell with Three Houses. Why? Why do they insist on this now? Hell, the few games that are narrower in scope, like Yoshi's Crafted World - something they should've knocked out of the park - looked like shit and ran at 30fps. There have been some games I've liked, but a lot more that I've either just been bored by or that I'm just waiting for a Switch 2 to play, because I don't want to put up with the performance.
And 3rd party? Man, don't even bother. I regretted it every time I bought something from Square-Enix or Atlus or whomever else, because it always got ported somewhere else down the road and was a massively upgraded experience.
So, it's definitely been one of the weaker Nintendo systems from my perspective both from a technical and creative standpoint. Some bright spots, but not too many.