Maybe I'm in the minority, but I would hate a future where I have to talk or type everything to an agent. It's difficult enough to communicate with people. Language is imprecise. For that reason, among many others, I think you'll always need traditional UI/UX, potentially some new concepts to adapt to new technology like AR, and supplemented by an AI Agent that can assist and augment rather than replace.

Apple's use of Siri in Vision Pro is a good start, but there would need to be tighter integration w/ the UI. That's probably on the roadmap... assuming they continue to develop it.