Let them argue whether Harpy created ISIS for the rest of the election. Everyone knows the truth is it is a direct result of the Arab Spring and Mooselimb Brotherhood.
The press is being deliberately dense, insisting that Trump be literally and precisely correct in what he says, and when he is not (which is often), they make THAT the story. The press can apply nuance til the cows come home, with the candidate they are advocating for, but criticize even deliberate exaggeration by Trump.
CNN takes the "Obama founded ISIS" remark as justification to conclude that Trump is reckless, intemperate, wrong on the facts, mis-informed, and not trustworthy. That's just nuts. Same thing with "Hillary will abolish the 2nd amendment." CNN goes hyper-technical on that, and makes the technicality the story. It's deliberate. People see through it.
Meanwhile, the press will NOT talk about whether Hillary's policies facilitated ISIS becoming a force to be reckoned with. The press will be busy spinning an obvious snippet of sarcasm into unfounded accusation of personal character defects and dangerous leadership.