That's a big question. I think TUIs are great for glue processes, and it doesn't hurt when they look pretty. They're also excellent first projects with composable interfaces. Shell code is such a pain. It's quick and dirty, but there are a lot of footguns. The main challenge is reducing the friction of making a TUI to the point where it's easy to execute an idea, and a lot of frameworks do this really well. Add the proliferation of LLMs on top, and maybe that could explain it?