I love TUIs.

I move much faster when I don't have to take my hands off the keys to nudge the rat.

However, I don't think my preference for TUIs is about my efficiency. The most important reason I love TUIs is that they generally only have a base set of features needed to get the job done. Most GUIs go off the rails, implementing features for use cases few people have. TUIs tend to be small, fast, and focus on a small use case.

So even though I started out claiming I love TUIs, what I really love is small software: CLI > TUI > GUI.