Didn't the Wii-U mostly fail because most people didn't know what it was? The marketing and name were terrible and plenty of people thought it was just a Wii add-on or something.
The console itself was actually pretty cool, playing Wind Waker on it was great.
For me personally, Wii U was the worst console purchase I've ever made lol. If it wasn't for Smash, Mario Maker and Nintendoland with friends every once in a while I never would have turned it on. I honestly had way more fun with the Vita.
I didn’t like mine and subsequently didn’t buy many games for it because of its over reliance on the game pad, and the game pad draining its battery over night if not plugged in.
Can’t access settings without the game pad, the game pad checked for updates and content way too often so the battery drained am quite often over night. Along with again, over reliance on the game pad where a lot of games I wanted to play, it was primarily built around the pad so controllers didn’t feel natural for the games
It's not really fair to compare it to the wii u because the wii u was a handheld console while this is basically a hand held gaming streaming device. The wii u is more compared to other handheld consoles/computers like the steam deck or Asus rog ally.