Polls like this are silly. It does not matter what people think about if he does or does not have what he claims.
It is what it is.
How about a poll on the boiling point of water? Is it 100C or 50C or 150C ..... it is what it is a poll will not change reality.
Your example lacks reference to the Rossi scam. Because water boils in different pressure levels at different degrees, and Rossi is a complete scumbag, NO MATTER ON WHICH pressure level.
And this poll can eventually ( if one was maye ever made before ) track the sane people who definitiely said NO or (if there were more than one poll ) now said NO. At least Mats Sockpuppet Lewan can track the amount.
And present that to Rossi.