I'm ok with it ... We got the original, and he gives a perfectly valid reason:
For iOS, we've adapted the control system as best as we could for the touchscreen. Since the game was meant to be played on a PC with a controller, this wasn't easy to do. But we were happy with how it worked and, really, it was impossible to do better. Touchscreens are awesome for a lot of things, but they're less than ideal for a fast-paced game like Futuridium.
I love the game but I agree it's a hassle on glass. It's much nicer with a regular controller.