Fallbacks are frequently not implemented, not tested or not supported as well as the main feature.
> Even detecting if the terminal support colors is a pain.
As the end user, I don’t mind. This means that I’ll see colors only when it’s important.
Support for images concern many of us for that reason: sure it seems nice for a few cases used judiciously. But it feels counter-productive to the strengths of the CLI.
I would feel that way about curses/cli-based-gui too in theory, but in practice it's just top, vim, and less for the most part. Maybe I'm just too scared.
> Support for images concern many of us for that reason: sure it seems nice for a few cases used judiciously. But it feels counter-productive to the strengths of the CLI.
Of course those things should be used judiciously, but building CLI app on a broken standard only make it so much harder to build a quality app. You get a crappy end result just because it's difficult to do the "judiciously" part.