Actually that incident didn't fizzle out.
It was used EXACTLY as planned.
It is now frequently cited as the "reason" why all these "fake news" sources need to be shut down, so that they do not inspire or mislead people who will then go on to commit ridiculous crimes based on falsehood.
So, it was well executed and everyone following the investigation is played for fools.
The EU apparently has just recommended that all "fake news" sites be blocked (perhaps at the ISP level? Blocking entire domains?) and meanwhile here in the USA, it seems legislation is also being passed to achieve similar ends.
Interesting that all this happened within about a week, all the legislation, the outcry, the "gunman", the meme of "fake news", etc. and this is all sufficient ammo for the libtards to now sneer at conservatives and "truthers" with all these silly conspiracy theories, etc. and even GLADLY support the incoming BROAD CENSORSHIP / THOUGHTCRIME legislation.
Trump had better do something soon. He is looking more and more like a Trojan Horse. He's said he's not going after Clinton. Then he's playing nice with New York Times and saying they are respectable and great. He also said that Obama is a great guy and he listens to him, etc. (he said this on the Today Show interview).
Don't know if he is just playing for time to get all his ducks lined up and making nice right now to get ahead.