I just finished the video. His point on level scaling may have changed how I feel about it. I have a mag’har orc shaman and he’s totally right that leveling up is actually meaningless with scaling. Compared to classic, leveling in retail feels like just a number. My shaman is no stronger or weaker than before, since the world continues to behave for me the exact same as before, and it’ll behave like that for someone far above or below my level.
Overall what’s happening is that it seems Blizzard has created conveniences that make the world behave like a single player game.