To me TUI have a better user experience than graphical applications. And considering the amount of companies that are still using decades old AS/400 systems instead of new ERP system I'm probably not the only one to think it like this.

First, a TUI is usable with only the keyboard. Moving the mouse is a waste of time, and if you are using an application multiple hours a day, it can lead to being more productive.

Second, a TUI has no useless animations, elements, etc. It's not pretty, you have on the screen only the stuff you need to do your job, and you are not distracted by useless elements.

Third, a TUI works beautifully in a client/server world, where you have one central computer and dumb clients that connects to it, and the connection can be a simple serial connection as well as a network connection. It can be rendered even with an ESP32, making it suitable for embedded HMIs and all kind of computing scenarios.

Lastly, the user can choose the font, the colors, the size of the font that are best for him, usually a monospace font that it's surely better to read information multiple hours a day.

To me it's the opposite, GUI interfaces were born to make it intuitive to use a computer, but are not as efficient as TUI in terms of productivity.