I admire the author's straight-up owning her choice here, in spite of the elitism that's long fueled the whole "lol you use nano!?" douchebaggery.
Perhaps worth a chuckle: I once interviewed on-site somewhere, panelist-style format with "the team" hitting me with questions all around. One of them asked about my preferred editor. I mentioned some GUI editor I was using back then (don't remember now, it's changed over the years). He laughed and said something like, "what, you!? YOU use a GUI editor, not vim!? C'mon man! You're better than that!" So I fired right back at him, jokingly: "Dude, it's an editor. Not a religion. I ain't down the the jihad, bro!"
Fact is, you can be productive in just about any editor as long as you know how to use it right.
If vim/emacs is your jam, fantastic, you have fun with that. You can brag about "productivity" all you want, but there are - demonstrably - other people out there who don't do it your way and they're equally productive, and in some cases better. Productivity isn't measured in keystrokes per second. What matters is what gets DONE.
The elitist attitude that anyone not using emacs/vim is "fail" or "noob" is just plain stupid. All that does is demonstrate that you value your own ego over the success of your team, and that you might derive pleasure from putting other people down, a significant mental health problem. It also forces people to raise their guard around you, and erodes their trust in you, especially if that attitude is reinforced in other ways. I'm not saying you can't joke around with people, and it would be short-sighted and foolish to draw any final or major conclusions on ONE thing like this alone, but if someone sincerely pulls this elitist BS on you, you'd be a fool not to raise your guard, to some degree, around that person from then on.