As someone that was extremely skeptical of the Switch but ended up grabbing one anyway: it's not as gimmicky as it seems. The truth is that while the Switch is being advertised as a hybrid, the real strength of this console, to me, is that it's super agile to use, while still being a console in the traditional sense. Like a smartphone or a modern laptop, you can wake it with the press of a button, play for a while, then put it to sleep with the press of a button again, then resume playing instantly later. That's less about the gimmick and more about what a modern videogame console ought to be today, but it's not immediately evident to the naked eye until you start playing with it regularly.
I personally find that I play more often with my Switch than with previous videogames consoles I've owned, simply because of that agility, because I can fit it in my life without making time for hours long sessions.