I think not. Edit is to edit files in the terminal. What kind of files do you expect people to edit in the terminal? Most certainly files that would benefit from colors, not prose.
Prose thrives in the terminal. Ice and Fire was written in WordStar, as just one popular example.
He's averaging a hundred pages a year. Maybe not the fastest, but certainly not the slowest writer. With the size of his books... Cut the guy some slack.
Seems like people have cut him a lot of slack already. Of course he doesn’t really owe anything to anybody, but at some point he and everyone else has to face the reality - which is that if that book is ever published, it’ll be posthumously, finished by a ghostwriter.
I can't find the link but I think at some point she compiled her own nano with some "helpful" feature patched out again.