Hi Jake,
When I talk about eliptical hulls and safety and reduced pitchpole tendency, I am really only addressing the topside of the boat, the deck. Boats pitchpole at speed as you know. The boats in this picture are certainly not "at speed" and pitchpole is not a consideration. I don't know where you are coming from, Jake.
The second boat from the left is certainly getting its decks pounded and flat decks are certainly much higher drag than round decks from water crashing down on them moving in the vertical direction. The sailors on the third boat from the left are too far aft on their boat and this makes the boat stand on its transom as the wave passes. They are lucky they didn't get washed back to the beach.
Bill