Yes, but did Trump say “Iowa voters are stupid?” like the media is saying?
Did he or didn’t he, in your opinion?
No, he didn’t.
Trump asked what I'd call a rhetorical question, to wit:
How stupid are the people of Iowa . . . to believe that crap?
Well, I've been taught that whenever a rhetorical question is proffered, a conclusion is unequivocally embedded in said question. Therefore, I gotta think that no amount of contrary spinning by the Trumpeterian apologetic chorus can change the reality that Trump's statement clearly implies stupidity on the part of at least those Iowa evangelicals who continue to support Carson.
But does it matter? Probably not. As has been already established beyond any shadow of reasonable doubt, Trump is untouchable and can do no wrong.