Comment by basilikum

I like that they are integrated into the terminal and stay in the terminal. For most things my terminal multiplexer is essentially my tiling window manager and everything that breaks out of that via its own window is very unergonomic and breaks the structured logic of my workflow. Technically just having a full GUI inside the boundaries of a terminal would be fine for a lot of things. But it's also one of these things where constraints make a lot of things better. Many GUIs are just really bloated and bad. TUIs just do not allow a lot of the sins of modern GUIs.

I agree that they can get very clunky for non text based tasks or anything where you actually need custom text formating.