You make a good point.
Unfortunately a perfectly reasonable point of view has been made toxic. We’re through the looking glass....
The situation is too far past the point of being able to be handled properly.
If (and it's a massive, huge, nearly insurmountable IF in my book), there is anything to it, the birthers themselves have made the issue too toxic to touch.
Too many have made a point of questioning whether or not Obama's mother was his mother, whether or not his aunt was his mother, whether or not his grandfather was his father, and so on. They've called him and his family members insulting, demeaning names. They've accused him of being involved in his grandmother's death. They've pinned their hopes on nuts, frauds, and convicted hoaxers. They've called members of the military "cowards" when they refuse to join them in their quest. They've done the same with judges, accusing them of treason if they don't vote the way birthers want them to vote. Everything has become one massive, huge, all-encompassing conspiracy theory.
If I were Obama, I'd be wishing every single day that someone who aspires to national office would actively join the birthers.
All Obama would have to do is show off all the things that have been said and written, and he'd be set. "Look! They're making fun of my dead mother and grandparents. They're associating with convicted hoaxers. They say I may have killed my grandmother. And you, (name of candidate) agree with them!"
It is not unreasonable to ask for more transparency from someone seeking the highest office in the land. One need not engage in conspiracy theories to demand that such an office holder be more forthcoming.
You are absolutely correct. It's not at all unreasonable to demand transparency. But the absence of transparency doesn't mean that the next logical thing to do is to engage in name calling and conspiracy mongering.