Let's leave aside things like reading for pleasure. If all I want is a pure just-the-facts-ma'am summary of, say, the Jacobite Revolution, I can go to Wikipedia and get an executive summary with additional information as needed and a list of further resources and citations. I don't need AI for that.

AI isn't going to put things in both the historical context of the time. If anything, it's going to have the same modern biases, stereotypes and presuppositions that we view history through - "nasty, brutish and short", "sexually repressed", "a naive, superstitious lot" etc.