It hugely enhanced synthetic and contextual memory, which was a huge development.
AI has the potential to do something similar for cognition. It's not very good at it yet, but externalised cognition has the potential to be transformative in ways we can't imagine - in the same way Socrates couldn't imagine Hacker News.
Of course we identify with cognition in a way we didn't do with rote memory. But we should possibly identify more with synthetic and creative cognition - in the sense of exploring interesting problem spaces of all kinds - than with "I need code to..."