It’s functionally focused and because most apps are web based now, and TUIs are generally local, it makes them seem relatively very fast.

Get used to it, because with LLMs they're here to stay forever. (Bash will possibly be fossilized forever now, like the Latin alphabet.)

I think part of it is Visual Studio Code doing most IDE things very well, creating a market niche for terminal tooling that handles the rest.

Certainly part of it is also people of my generation being nostalgic for the TUIs of DOS file managers and editors.