[wormius]

TUIs are often more responsive in general. Some of us like the terminal and want to minimize as much mouse usage as possible (yes hotkeys exist in good GUI apps, but they're still primarily built around the WIMP model).

Command line often requires a lot of switch memorization. Command Line doesn't offer the full interactive/graphical power in this sort of situation. Command line is great for scripts and long running apps, or super simple interfaces.

Different apps have different requirements. Not everything needs a TUI, not everything needs a GUI, and if you want something similar to a GUI while staying in the terminal. Perhaps you don't have access to a windowing environment for some reason; perhaps you want to keep your requirements low in general.

Finally, why do you care? Some people like it others don't. Nobody comes in and shits on any programs that are GUI if they don't like it, they just don't use it. So, to quote The Dude: "That's just, like, your opinion man". Sorry for the snark, but... It really is, and you're free to have it. But it seems an irrelevant point, and there may be better forums/posts (maybe an "Ask HN" question would be a good option) to discuss this question in depth beyond snark.