So the basics of my question is the title.

Let's say a beginner pianist wanted to become amazing jazz pianist. Would they be better served taking lessons from one of the greats (assuming this was possible)- Herbie Hancock, Brad Mehldau, Emmet Cohen etc. or should they learn all the basics first (chords, blues scales, basic jazz standards, etc.) and then seek out the lessons from these experts?

The same for classical. If a beginner pianist wanted to become an amazing concert pianist, would they be better off taking lessons from Yuja Wang, Lang Lang, Martha Argerich etc. to learn the basics (where middle C is , etc.) or waiting until they can play a basic Chopin prelude?

I assume the answer will be that an amazing pianist isn't necessary an amazing teacher. But I'd love to hear your input.

Thanks!