Maybe you should. As should Stonecrusher69.
You're criticising them for not doing WC: "They didn't look like they were doing WC"
The objective is to do San shou. i.e. Learn something via competing with people doing something other than your own style.
The WC person was the guy wearing black in the first clip and the guy wearing red in the second clip. It's obvious because they are the ones who were punching in combinations and trying to walk forward with their punches. They were landing good punches as well and punching far better than their opponents.
Well done to both guys.