They are transient only in those rare domains that can be fully formalized/specified. Like chess. Anything that depends on the messy world of human - world interactions will require humans in the loop for translation and verification purposes.
I really don't see why that would necessarily be true. Any task that can be done by a human with a keyboard and a telephone is at risk of being done by an AI - and that includes the task of "translation and verification".
The power doesn’t stay on solely from people with keyboards and phones.
In essence, it used to be (I have not stayed current) that the "AI" was limited on how many moves into the future it could use to determine which move was most optimal.
That limit means that it is impossible to determine all the possible moves and which is guaranteed to lead to a win. (The "best" than can be done is to have a Machine Learning algorithm choose the most likely set of moves that a human would take from the current state, and which of that set would most likely lead to a win.