The article has cause and effect reversed. Peoples stereotypes, expectations, and "coded" language has created the results. When someone googles "Brazilian Women" or "Latina Women" they looking for porn and racy photos not pictures of normal women from those countries/regions.

There is all sorts of coded language that people use to get the results you want. Search "Black Women" vs "Ebony Women" and look at the difference in results. No one is searching Ebony unless they are looking for racy content.