"People will perceive and interpret ambiguous or complex images as the simplest form possible, because it is the interpretation that requires the least cognitive effort of us."
If a website violates its own laws, that brings into question the credibility of the laws, or the credibility of the author of the website. Without credibility, it feels like a waste of time to do anything more than skim... perhaps this is a failure of UX?
Fair point about 15, but neither you nor the website managed to express Hick's Law any better than KISS.