Thing is, even if the people that believe Trump is sensible or has a point are correct in their interpretation - we shouldn't be in a position where it takes a bunch of people to "interpret" / "spin" (depending on how you see it) Donald Trump's 140 character, ALL CAPS punctuated Tweets into something that might come close to a sensible point.
If Trump really believed that "Public approval is lower than it should be right now because Buzzfeed irresponsibly released a document filled with unverified claims, and once all investigations are complete and everyone will be able to see there is nothing there people wil come around", he could say that.
If Trump's point was that "The media's coverage has been unfair and public approval polls are influenced by that", he could tell people that.
If Trump thought that "Polls have been shown to be inaccurate and underestimate my appeal, either because of flawed sampling or because of a climate where people don't like to admit they approve of me", he is free to say that.
But no. All he can say is that a news organisations report on the approval poll's results is "FAKE NEWS! SAD!"
His Twittering is bad from either perspective. For those that believe Trump does have substantive things to say about anything, you should be hoping that he can actually come out and communicate those points properly, rather than appearing to just sling petty Twitter insults at whatever he doesn't like in stilted 140 character bursts.