There's plenty of buttons, people that don't have beta are just sticking to the 2 button mash that was the problem in early alpha that has since been fixed. People just bandwagoning just to put in their two cents, however knowledgeable that may actually be. Just looking at logs of a demon hunter can show you all the different sources of damage though annihilation and chaos strike are a majority of our damage on raid testing there are so many other buttons to press, having main abilities doesn't mean there aren't any other buttons.