You just dredged up and replied to a post from over a year ago by a person who is no longer a member of the site. Tilting at windmills might be more productive.
You're wrong about the 2009 swine flu. That pandemic originated in Mexico.
Asia is considered an important source of influenza A virus (IAV) pandemics, owing to large, diverse viral reservoirs in poultry and swine. However, the zoonotic origins of the 2009 A/H1N1 influenza pandemic virus (pdmH1N1) remain unclear, due to conflicting ...
www.ncbi.nlm.nih.gov
The swine-origin influenza A (H1N1) virus that appeared in 2009 and was first found in human beings in Mexico, is a reassortant with at least three parents. Six of the genes are closest in sequence to those of H1N2 'triple-reassortant' influenza viruses isolated from pigs in North America around...
virologyj.biomedcentral.com
True it wasn't called the American or Mexican swine flu. However naming diseases for where they first come to the forefront is a common practice, e.g. your Spanish flu example. It didn't evolve in Spain...more likely in Kansas, but it first hit the news in Spain thanks to wartime press restrictions and the name stuck.
Another prime example of viruses named after their apparent geographic origin...."ebola" whose genus was named after the Ebola river near where it was first discovered. The knuckle-dragging public commonly calls it just ebola, but that is the genus....there's actually 6 known species of ebola, each named for locations where they were discovered: Zaire Ebolavirus, Bundibugyo ebolavirus, Reston ebolavirus, Sudan ebolavirus, Bombali ebolavirus, and Taï Forest ebolavirus.