Based on quickly skimming that webpage, its main scientific source is one article in 2014 in International Journal of Biodiversity. This International Journal of Biodiversity [1] was only published from 2013 to 2018. It is such a small and fringe journal that I can not even find an impact factor for it. Also its publisher [2] has occasionally been accused of predatory practices. Without reading the article, I cannot of course directly comment on the quality of the study. But publishing in such a small-time, fringe journal gives a bad secondary signal.
Based on quickly skimming that webpage, its main scientific source is one article in 2014 in International Journal of Biodiversity. This International Journal of Biodiversity [1] was only published from 2013 to 2018. It is such a small and fringe journal that I can not even find an impact factor for it. Also its publisher [2] has occasionally been accused of predatory practices. Without reading the article, I cannot of course directly comment on the quality of the study. But publishing in such a small-time, fringe journal gives a bad secondary signal.
[1] https://www.hindawi.com/journals/ijbd/contents/
[2] https://en.wikipedia.org/wiki/Hindawi_Publishing_Corporation