I want my interfacing with computers to be mouseless and TUIs offer that. I don’t think I’ve run into a GUI, no matter how many hotkeys it has and I know, where I didn’t have to reach for the mouse.
CLI only also requires remembering commands, some of which I use very infrequently, thus need to look up every time I use them.
I think TUIs hold a very nice spot between GUIs and CLI.
I use the TUI from a terminal tab in VS Code, my agent works with that and the custom extension with a webapp based interface, seamlessly and concurrently
GUIs, TUIs, and PR/kanban all make sense in different situations. We'll all use at least two of them on regular basis for coding agents.
TUIs make way less sense for your average user
It's also easily mouseless without any Vim or like extension. I never mouse in it, having given intuitive-to-me keychords to all the various moves I need to make beyond the standard stuff.