Fact is, even if they are capable of fully replicating and even replacing actual human thought, at best they regurgitate what has come before. They are, effectively, a tutor (as another commentator pointed out).
A human still needs to consume their output and act on it intelligently. We already do this, except with other tools/mechanisms (i.e. other humans). Nothing really changes here...
I personally still don't see the actual value of LLMs being realized vs their cost to build anytime soon. I'll be shocked if any of this AI investment pays off beyond some minor curiosities - in ten years we're going to look back at this period in the same way we look at cryptocurrency now - a waste of resources.