While an alluring title, and commendable argument, I do not necessarily think this is about computer or user interfaces. Ok, so I, instead of navigating Finder, or Windows Explorer, or something analogous where I have an idea in my head of where my _files_ (a tangible, while "transferred" concept) are, ask an AI agent "list files I was working on last week". This does not imply a computing problem unless by "computing" you mean I am unable to organize myself and my head does not compute -- I either know where my files are, or I don't. An AI complements my memory here, this isn't a UI problem, it's just me getting lazier or more complacent, like someone with "functioning depression" who gets by at the cost of living in a "functioning mess". I am not sure I would want to hold myself to such a standard. If this was only about efficiency -- sure, let the AI complement myself, but this starts to look like explaining sheer lack of organizaiton and calling it "the end of tooling" (because I can't or won't use the tooling anyway, too much hassle). Meaning that us advancing into a WALL-E (or "Idiocracy") age where we just voice commands to AIs while we literally lie on a bed -- is that a good thing?
Let me try to clarify and simplify my rambling: I would like AI to help me, I do, but I should know where my project files are, should I not? If our memory isn't needed, I am sure evolution will shrink it. Then we put an "AI" in our brain to remember for us, and the circle is complete?