I like TUIs for largely the same reasons as you, but I don't think this is actually a valid criticism of the article. It specifically addresses this by pointing out that you can make your GUI keyboard driven if you want to, so this isn't really an advantage of TUIs per se. It just happens that TUIs tend to be keyboard focussed while GUIs tend to be mouse focussed. But that's a design choice rather than an inherent property of TUIs vs GUIs.

I agree that I found the article to be poorly written. Mainly because it takes a long time to make its point. I didn't really need to see a million examples of the author's vibe coded slop before getting to the topic which the title suggested the article would be about.