It’s real. From the yahoo news article that someone else linked: The defense secretary wrote “Cool story, General” in response to a tweet from retired Lt. Gen. Ben Hodges about Adolf Hitler gathering Nazi generals in 1935 and them being “required to swear a personal oath to the Führer.”
Would the outcome have been the same without people in the media repeatedly bringing this to everyone’s attention? Probably not, because there would have been no public pressure against it, while the shadow groups that want this would have still been lobbying the politicians.
Something bad is going to happen.
Some people advocate to stop that bad thing.
Even more people are holding their clutches that the bad thing might happen.
Because of public pressure, action is undertaken to prevent the bad thing from happening.
Thanks to those efforts, the bad thing is successfully averted.
Some random person: that bad thing was never going to happen, look at all those gullible people who were panicking over nothing, we could have just done nothing and the outcome would have been the same.
Also known as the “preparedness paradox”: https://en.wikipedia.org/wiki/Preparedness_paradox