No. Mobile gaming is not vastly different anymore. It was different back in 2004, but in 2015, the presence of buttons does not change
everything. In fact,
if you've researched any iOS or Android usage report, you would know that for millions of people, iOS and Android devices have become
their handheld gaming device. These are mobile devices that are being used for gaming (and so much more) and they don't have buttons.
Let me put that differently. The days of making a mobile device that only does one thing are gone. With the NX, Nintendo should not share design and market principles with Garmin and Polaroid. If Nintendo are paying attention, they will not create a handheld gaming device with archaic technology. Dual screens, resistive touchscreens, analog 'nubs' -- these are things that will anchor the NX to the past. It's time to evolve.
There's nothing wrong with wanting a device that's a throwback to the good ol' days, but we need to be realistic and look at whether or not such a device can succeed in the present and future marketplace. With Nintendo's next handheld, they need to be aware of what works and what doesn't work in mobile. Archaic technology just doesn't work anymore.