There is no inherent conflict between GUIs and TUI-like speed. It’s the web tech stack and cloud-based apps, and piles upon piles of leaky abstractions in other environments, who have made things slow. Open Microsoft Word or Excel from 25 years ago, and it will be incredibly fast to operate.
Sure I agree, but getting fast at using mainframe style UI takes a lot longer and until you mastered the commands you would be slower. GUIs let people self teach which is valuable.
Web tech definitely makes it harder to give a really snappy experience.
