> AI unlocks what seems to be the future: dynamic, context-dependent generative UIs or something similar. Why couldn’t my watch and glasses be everything I need?

Voice input isn't suitable for many cases, and physical input seems generally superior to AR -- I've used a Vision Pro, and it's very impressive, but it's nowhere near the input-performance of a touchscreen or a mouse and keyboard. (To its credit: it's not aiming for that.)

Unless the argument is that you will never have to be precise, or do something that you don't want everyone within earshot to know about?

Also, a "dynamic, context-dependent generative UI" sounds like another way to describe a UI that changes every time you use it depending on subtle qualities of exactly how you reached it this time, preventing you from ever building up any kind of muscle-memory around using it.