I don't see any real advantage of TUIs over web forms or GUIs for the same thing. I do like CLIs though, especially the ones that are properly capable of working in pipelines. Composing a pipeline of simple command-line utilities to achieve exactly what you want is very powerful.
I like a TUI when I always want an app to run side by side with a CLI. It’s easier to do split windows in a terminal or tmux/zellij panes than to script two separate app windows to stay locked together as a pair. Although, I’d welcome advice as to how to do it better. I also find TUIs are easier to program for the same reason they’re limited. Fewer human interface aspects in play and it’s not offensive to use the sam…
Did you try some tiling window managers and decided you did not like that?