I presume this is another way to avoid the infamous Emacs pinky.

What I am currently trying out is sticky keys (on Xfce). I find that it slows me down a bit, but I'm extra careful as well. I still hold my fingers on Control and Shift when doing Copy in Paste in the browser, though.

So this is basically a toned down version of evil?

Looks to me like something similar to Evil, but which follows no Vim conventions at all and has way fewer features. Maybe there's an audience for it; I tend to think if you're going to go with modal editing Vim offers a tried and true model, for which Evil mode already provides a really good implementation.

Looks like modal editing for non-vim users