If AI is still too stupid to show people how to work with it, and to notice their lacks and anticipate their needs, it can't have become that indispensably useful.

The entire point of AI is to accommodate the user. AI doesn't do anything that people can't do, is worse at most of those things, but is a lot faster at some of them (basically looking up things.) The point of AI is natural language UI.

Teaching people how to use AI is just teaching people enough about the world to give them something to ask AI for.