My "view" is that had Apple rolled out the original iDevices and all since as 16:9 with the same Apple marketing spin that makes the crowd believe that ever "thinner" is some fantastic benefit (even as functional guts start coming out to make room for more thin- though the price doesn't fall with the loss of utility), these poll results would very much be the other way. This same crowd argued "720p is good enough" when Apple seemed to agree but then quickly dropped that belief as soon as Apple embraced 1080p in iDevices and

TV3. PowerPC was far superior to Intel right up until Apple decided that Intel was better, spun it that way, and then this crowd flip-flopped on the mainstream (whatever Apple thinks) arguments to go with that (new) flow. iSight in an iPad made no sense at all in iPad 1 (the vast majority of this crowd ridiculed it as "stupid", "99% doesn't want or need..." and so on), right up to iPad 2 with "FaceTime" and then it became "shut up and take my money", "best iPad ever", "can't wait to Facetime with my new iPad". Who
would want an iPod with video as Apple ridiculed right up until Apple rolled out iPod with Video and then the crowd swung right with Apple. And on and on.
The existing screen ratio is best because that's what Apple chose. Much like the 3.5" iPhone screen was "perfect" right up until Apple chose to make it larger. And when there were only rumors of a taller-but-not-wider iPhone screen, it was "stupid", "fragmentation", "Apple would never", "monstrosity", etc right up until the rumor started seeming very likely. Then, it became "starting to grow on me", "wait & see". Then, out rolls the completely new screen- taller but not wider- and it was "shut up and take my money", "best iPhone ever", etc.
16:9 would have been fine (here) if Apple had chosen to endorse it. If they choose to endorse it in the next models of iDevices, it will be "best iPad ever", "shut up and take my money", etc. As usual, the crowd works very hard to come up with every possible spin of rationale- logical or illogical, rational or irrational- to support whatever Apple chooses to do.
If the purpose of a poll is to get some objective views, it needs to be approached objectively. This one might as well be windows vs. OS X, android vs. iOS, and so on. If the purpose of a poll is to get a bunch of people to vote with whatever Apple thinks, this one is right on target.