TUIs, work on several operating systems. I use same set of apps across Mac, windows and Linux.

You can use them remotely over SSH connections, and they can survive disconects (within tmux). No VNC, or X11 forwarding needed.

They take less memory. compare vscode vs nvim.

Super fast to launch.

They can integrate with other TUIs and shell apps, shell-scripts, pipes

and lastly they do not contain Ads. lol