It seems neat, though I would never seriously use an editor that I couldn't run in a terminal. Too much of my work happens remotely.

Additionally, in my mind a terminal serves a similar role as plain HTML web pages - it constrains what can be done and I am extremely used to it, which makes it very easy and quick to use. On the other hand in a GUI editor (or a JS-heavy web page) it feels that it has more possibilities, which allows authors to customize things in ways that I don't expect, which can take away from my focus on what I'm doing. There's also the additional curse that because of these possibilities, authors seem eager to change things more often, whereas I value stability.