His downfall was not realizing there was no way he got 5 years.
His downfall was Noel sitting a year, then Embiid requiring two years to heal his foot. Then the Lakers taking Russell instead of Okafor. Things would be further along if just a few more things fell his way. But in the end, he'll get a ton of credit if things start to progress as they should -- if the Coangelo's don't screw things up.
The NBA doesn't need to fix the draft, it needs to do more to bring every team toward the middle. Figure out how to get better players to sign with lesser teams. Have a salary floor that actually has to be on the roster. Eliminate the exceptions that allow better teams to sign veterans as depth players.