From what I can tell, it seems no less complicated than just setting up the server the traditional way. But maybe that's just me.
Well, for some people it's easier. It also gets all the server stuff configured, such as the run file, downloading the jar, easy on/off buttons, explanations of everything, etc. For me, it's more annoying, but that's just because I'm used to text-based everything, and if possible, never use a mouse.