I disagree. Peak MJ was certainly early 90's. Late 80's MJ was peak athleticism MJ. But early 90's he still had great athleticism but it was now partnered with a deeper understanding of the game, a much smarter MJ, he had fully formed his post game and jumpshot, better teammates and an all time great coach.
Added the bits you missed.
I wasnt excluding any years from anything. The point still stands though. Once MJ climbed the mountain, nobody removed him. LeBron climbed it and then was dethroned.
Well except for by Orlando obviously. And then he just sort of gave up at the end there.