Beauty is highly subjective and the article doesn’t really explain the study, so - yes - junk science.
The picture they show (can't post here) bears that out. Those two look fairly average to me.
Beauty is highly subjective
My explanation is that pretty women can have the pick of men, and smart (rich) men can have their pick of women, so they tend to pick each other. Which results in kids that are above average smarts and looks.