Author here. In reading this thread, I'm struck that most of the objections to emacs are both legitimate (as are the arguments for it) and focused on programmer-specific issues. Back when I wrote the original post, I was experimenting with using emacs as a CEO who writes little code these days, but was dealing with a maelstrom of disparate information and interruption. It's been a very successful experiment, which I'll document in a follow up post soon. Glad that it got some good conversations going!