I'm legit thinking of getting a Wii U in the future. It's a console I've always wanted to own but didn't have the money back then.
I'm sure eventually the Switch will be cracked wide open and all models will be moddable like what happened to the 3DS, but for now, we wait
I love my Wii U ngl, it's a very good console if you don't mind the lack of third party games, I've heard some ports aren't the best, like Assassin´s Creed 3/4, but when you mod it... it's awesome, I recommend it.
Yes, it's a matter of time imo, Switch will fall, eventually.