Dont really care for the opening quote about the emacs maintainers. Emacs is moving plenty fast. I dont see why they wouldnt contribute upstream. Its added such an insane feature list in the last few years (native compilation???, tree-sitter in progress, PGTK) . Sure this has some nice features but its not like any of them are outside the capabilities of the people making the version of emacs most people actually use, better, given how monumental the improvements that have already been made.

It would be nice to get a better GC in, and the long lines. It just seems like the author is acting as though they are the only ones to be attempting to make real improvements despite the obvious efforts by a good few other people.