I was a HUGE Apple fan for the early Macs. I totally get what you are saying. But we LOST in the workplace. It was just too slow for the other folks in the office to use (of course, the real death blow was having only a graphics mode to the display so the typing was dreadfully slow-- and the secretaries wouldn't use them- but that's another story).
But I get your point. That's why I phrased my response as I did. I have never done UI/UX testing- maybe the parent has and was sharing his insight.
But if we are all just speculating, I've got to throw out a shout for the other point of view. Yes, too many (how many is too many? I don't know) and it gets to be like using VIM. But two buttons? Seems like it should be ok.