Do people consider the switch a mobile platform? I mean it sort of is but... It's really a console. Depends how you define mobile, if mobile === carry in your pocket it's not. If mobile === independent from a TV then yes.
In London, it does not appear to be treated like something mobile – but in Tokyo it certainly is. You will see kids – mainly boys – huddle together around Switch screens or playing using the wireless wherever you go in suburban Tokyo.
It’s very common for high school kids (in America) to take their switch from class to class and play during free periods. A lot of people take their switch everywhere in their bag and just prop it up when they want to play a quick game of smash with friends.
So yes, I would definitely consider the switch mobile