I don't think offloading things that you "think" you don't need to know is a realistic thing. Instead this seems like some slippery slope of intellectual degradation where slowly you'll replace more and more parts of the thought process with AI which ends in some rather sad existence.

I agree, I suspect that when we say "oh, I don't need to know this", what we really mean is we have that unpleasant feeling behind our eyes that says this is not going to gratify my goal

The issue being, gratification is rarely a good guideline. It just means collapsing the gap between doing the thing and the idea of having done the thing. But that gap is where you actually learn things