I'd prefer a more honest tutorial. Who is this editor for? and show the kinds of problems it was designed to solve, nobody makes generalist text editors anymore and nobody needs a generalist editor. Like are you really trying to convince poets to use this? Of course not, this tutorial relies on some domain expert seeing it and mapping the functionality show in the examples to their problem.

Also the utility of these kinds of editors goes way down when you aren't doing many quick edits of arbitrary files ( which points to a larger workflow problem though perhaps unavoidable for some )