I've seen this one a few times lately. People should stop building UIs, nobody wants to interact with a UI. Everyone's app should just be an API that you can use with a chatbot. Except for my app — my app is a handcrafted miracle of artisanal UX and its UI will change the way you see the world.
It's exactly the old argument, just now with LLMs in the place of shell pipelines: in terms of functionality and value to users, software ought to be malleable and composable. We've known it since the eighties. But the model of selling a piece of software as a product as if it were a pair of shoes is incompatible with that. You need a big monolithic application to justify users paying a bunch of money for it, and you need it to have a fancy interface that makes an impression. And the whole software industry is built on top of that model. Where monolithic software is completely unfit for a purpose, like when it needs to be a component of a larger system, we rely on (mostly unpaid) OSS.
Except now LLMs let you, with very little technical know-how, plaster a ‘programmable’ interface on top of unstructured data/interface meant for humans, and because that's what we actually want, of course everybody does that. So the end result is a wildly expensive pipeline from API to UI and back to API again. I wonder how long the legacy ‘human-oriented’ layer in the middle, and the industry that's been built on top of it, will last.
(Separately, chatbots are not great as a UI for most things, and the problem of building the universal UI still also stands. But it turns out for a lot of things people would rather have a bad universal UI than a good special-purpose UI for each task.)