Statcounter attempts to track what was used to visit internet websites. What the stats you picked are showing is not how many consoles are out there, but which consoles are used the most to visit internet websites. Switch doesn't have an internet browser, so that's basically Youtube visits because that's just about all that can be done with Switch.
I liked my explanation better
"I think people should define the word crap" - Kirby007
Join the Prediction League http://www.vgchartz.com/predictions
Instead of seeking to convince others, we can be open to changing our own minds, and seek out information that contradicts our own steadfast point of view. Maybe it’ll turn out that those who disagree with you actually have a solid grasp of the facts. There’s a slight possibility that, after all, you’re the one who’s wrong.