Course wasn’t mentally steep by any means, but I wouldn’t want to try and ride the technical sections flat out on my hardtail with the saddle up. Mostly because any line choice error was severly punished – anybody see the guy face plant on the rock garden on the first lap?
It was really noticeable that the guys at the front in both races were the ones who could ride DH most smoothly/efficiently. Bike handling skills might not win you the race, but the lack of them definitely could lose it for you.
As far as lockouts go, I’ve never understood the desire to drag the weight of suspension around without getting any of the benefits of it. All locking stuff out does is screw up the geometry. A bike doesn’t bob in and of itself. It bobs if the rider is bouncing up and down on it. Good shock set up and smooth riding (both of which WC racers should have in spades) make any lockout pointless.