Frankly I find terminal applications considerably easier than most GUIs for most purposes, but I agree that natural language is generally an easier interface layer than either, and that an interface layer to the functions of a computer in general seems to be LLMs' destiny as a technology
I’ve been using command lines for over 25 years now and the thing that rubs me the wrong way about them is that nobody can agree on conventions with regard to how a CLI utility should work, which limits the amount of knowledge that’s transferable between them. Each effectively has to be learned individually which gets old fast.