You'd think he ripped the game apart and declared it the gaming equivalent of breathing dead hippo but in fact, it seems he found the game a lot of fun and really fast to play but thought many of the rules were included for nostalgia's sake, not because they were better than what came after.
A guy who designed 3rd edition thinks he did a good job and advanced the state of D&D game design.
Hold the f-ing phone.
And then you know what he did? He named specific rules, like SIX OF THEM, that he thought were objectively better in 3e than OD&D.
Seriously guys, this is a controversy?