Another big reason why WHO has been quiet is because of China's influence, who has a big seat at WHO's table. They became extremely worried about stigmatization with with corona virus but never gave naming other viri a second thought(MERS being a good recent example). https://www.sgtreport.com/2020/02/who-gives-coronavirus-a-new-name-to-prevent-stigmatization/ Everything, top to bottom, about the virus and how it's been handled just seems very off.