I've just filled in the questionnaire which is simple and straightforward.
To address the points above, yes, any fan from any club could fill it in, however the vast majority will be blues and therefore the club will still get an idea of what people are asking for. I don't think it'll skew their figures much.
Also, asking about other logos and badges is surely a good way to gauge what people think and therefore giving guidance on what to aim for? They're not asking anyone to support Hull or Barcelona, or even go out and buy every Apple product - they're merely trying to gauge opinion.
I just hope now that the result is satisfactory. As said above, a guaranteed way to fail is to try and please everybody. Good on them for recognising a mistake, listening to the fans, and trying to rectify it.