All backdoors are poison. End of story. If the FBI wanted access to the data on the phone they would have it already. But they don't. Probably because the already concluded they were acting alone and not part of a terrorist cell or network and no longer have need of the rest of the information or they really just don't care enough about it.
However they do want to use this case to get precedent for industry to produce new backdoors for them into previously secure-ish systems in the name of "terrorists". This very idea is cancer, a cancer that will spread to other technological systems they feel aren't easy enough for them to tap into whenever they want. A cancer that will spread across the world as it sets a precedent for nation states to force private companies into deliberately weakening the security in their products to please whatever government finds their citizens having access to encyption to be reprehensible.
So no, it's not mis-information.
You and anyone else that thinks this is ok just don't grasp the gravity of the situation.