Well, the thing is Rubinstein is considered the father of the iPod. Effectively this should make him one of the people you'd go to for a revolutionary product, particularly one that would compete with the iPhone. Him saying he never used an iPhone at all just shows he's either lying (which may be the case), or that he's naive in thinking he can create a breakthrough product set to dethrone the iPhone without at least taking a peak at what Apple has done in order to do better himself.