I'm more concerned about our President's view about foreign wars that kill tens to hundreds of thousands of civilians, but I guess if you want to focus on their tweets then go ahead.
Sure, tweets are inconsequential, and I think politics would be more productive if disagreements focused on policy differences. But his words and actions show that he's a really petty and shallow person. And he would be a petty and shallow President. I don't think he really has many specific well thought out plans he could actually implement.
The fact that he never had to worry about such stuff doesn't bode well for his ability to handle such stuff.