Soundwave on 02 June 2017
Switch was intended for holiday 2016 most likely when they made the chipset decision, likely around late 2014 or so.
Tegra X2 simply wasn't in the cards then, and they had to make a decision on a chip. You can't just choose the chipset like 4 months prior, those decisions are made years in advance.
At the time Nintendo made the decision, Tegra X1 was the best mobile chip available.
