There is a difference between technology and functionality though.
Are gyroscopes well fleshed out? Sure.
But are they a good interface for menu selections? I'm not convinced.
You tell me, would you prefer to tilt your phone to scroll through the menus on your iPhone, or would you rather use a button (touchscreen). My Galaxy lets me pick either, and I always use the touchscreen and disable the Tilt function.
My choice here isn't whether I'd like to use a tilt sensor or a touchscreen, but a tilt sensor or adding more buttons to the device so that I can use those. I'd rather use a tilt sensor than adding more buttons to the device.
I like minimalism. I have a VW MOD that doesn't have a screen at all, and only 1 button. I'm not advocating that this MOD is for everyone (you'd hate it if you feel the need to have more buttons so that you can adjust wattage 3 seconds faster than a MOD with no buttons), but it's my favorite MOD.
Ultimately it's all about choice. More of them is good, and the only real gimmick I've seen so far is the vibrator MOD.