I don’t really buy that it was a jet contrail. It could very well be a jet but I’ve seen plenty of both jet and missile contrails. Based on the footage available this one looks more like a contrail I would associate with a missile or rocket.
Whether it is a missile or a jet contrail, the fact that authorities could not readily confirm or deny which it was is more troubling from a national security and safety perspective. The lack of any explanation, even an old excuse like whatever is was being classified due to national security or something would have gone over better than the ongoing media frenzy over apparent ineptitude, confusion, and lack of communication.