The media (and probably some of his own fans).
It wasn't necessarily hate (though it was reported Jordan was always tough on teammates, a douche bag).
However, Jordan was called a 'numbers guy, 'a loser', 'a scorer who doesn't make his teammates better', etc., through out the first 6 years of his career. So that's true.
It wasn't until Scottie Pippen, and then Phil Jackson came along when Jordan started really winning (though some are loathe to admit this/point it out), when he started getting the legend status accolades and equal status to Bird and Magic.
I think much of what you say is true.Jordan admitted that he initially thought he had to do it all in order for the bulls to win and tried to put everything on himself. It was only when he learned that he had to make everyone else around him better that they started winning. I would lay that development on Jackson who helped him see that. So it was Jordan helping Pippen and Kerr and the rest be the best they could be that made the difference.
When did Jordan learn that not everyone can do everything at such a high level like he could in basketball? When he tried to play baseball and couldn't make the double A roster. He was humbled enough to learn that even great effort isn't always enough to excel.
In many ways it is the same thing that Cam has had to learn and I think he turned the corner with that last year.