The article quotes a large number of researchers who are “producers” in varying capacities. National Geographic (which published the article) is both a producer of knowledge and a user.
NAT GEO is producing knowledge by spreading scientific research to a large audience but is also using the research of the scientists in the article. NAT GEO has a degree of responsibility to make sure they article is based on solid scientific research before publication.
Also, due to NAT GEOs role in the scientific community one might presume it has a larger responsibility for accuracy compared to a regular news outlet.
This kind of article and research is controversial and viewers (“users”) may interpret the finding to suit their own set of beliefs regarding homosexuality. Users responsibility for accuracy in this situation might involve being aware of their own personal biases and making sure it doesn’t affect the accuracy of their view of the article.