Juvenile tweets have global impacts as well and significant ramifications for the dignity of the Office not just from a respectability standpoint, but from a public relations standpoint as well. It is very much headline news. As to your point about the "fake news" articles, they may very well be valid, but it's not something that hasn't been reported on already nor what we already didn't know. Headlines are about immediacy of events.

It's also not "biased reporting". The reporter didn't state anything out of verified facts. What you are taking issue with is the editorial bias in what news gets featured and what doesn't. One could consider that subjective-- there's only so much real estate on a page and someone is always going to be unhappy with what is featured and what isn't.