Crazy, or crazy brilliant? Let's look at it from a non-partisan point of view, maybe in a militaristic or business sense as concepts often overlap.
IMO, what he is doing is calculated genius. Again partisan politics aside and from a pure strategical point of view, in a militaristic or business sense, there are brilliant tactics involved. Yes, he is always on the ragged edge and could easily fall off the tracks, so he walks a fine line. Even when he looks like he is falling off the edge he switches things up. With great risk, come great rewards or failures.
Now let's apply the OODA loop to what he is doing. He is literally dictating and controlling the OODA loop and making everyone react to a narrative that he is controlling. Everyone is caught up reacting to his action and he is one step ahead on what he perceives as his strategy.
He infuses concepts from maneuver warfare that are crushing many things. He spoon feeds the negative narrative for CNN or others to report on with tweets, comments, etc, that can be taken negatively by those who want to hate him, but often there are sensible explanations behind his seemingly crazy or ambiguous social media comments. There isn't always sensible rationale behind his tweets, but I think that is a mix of calculated genius and his kookie personality, you never know where he is coming from, so it is hard to know where he is at with things. While it may hurt him a bit, it ultimately makes the opposition look like idiots when certain things are fully explained and completely undermines them long term. He is giving the "look over here" distracting his opposition with petty things to argue over, while he is bypassing the main fight and going straight to his real targets and getting things done.
Trump will always remain Trump, but I think he will settle a bit, a little bit, but for now, he thinks he is best served by his current strategy which is effective. It will evolve, it must and he knows it, but it will be on his timeline, not anyone else's.