Yeah, IGN made it sound like the Switch isn't ready for full home console use. Other reviews kept mentioning how it's great on the go and how it's the most powerful portable gaming system ever, but not so much as a home console. They were mentioning that BoTW would dip in frame rate quite a bit when the Switch was docked, but run smoothly when undocked.
I think for the most part, you're not buying the Switch to be your main console, but you're buying it for the Nintendo exclusives and for the option to take it with you on the go if you'd like. BoTW will get the Switch into a ton of homes immediately and Mario will bring in the stragglers during the holidays that wanted to wait.