TUI also doesn't slag around the emulated VESA framebuffer over VNC or on a desktop VM client.
A TUI install is able to run over serial port, which means the client has normal, native copy paste. I don't know of easy way to "share clipboard" when VM is running in graphics mode without extra drivers.
Also keep in mind it is roughly the same people writing TUI desktop applications and GUI OS installers in 2026. You install a Linux using full blown Wayland session with a fat installer only to curl | sh various TUI junk from github that cosplay as full blown graphics applications and you work in them. KDE is fat, Kdevelop "looks ancient", lets create entire desktop and development environment out of small pieces like it's 1992 in text mode but god forbid disk partitioning or anything else than shiny branded next next finish installer GUI