This is an Error (well unless it was made on Purpose and i didn't understood it, in that chase Sorry)
The Spanish Flu, differently from what the name make think, didn't originate in Spain, so Yes, Spain Flu is Racist, and if we use the Spain Flu's Logic on how name the Virus then Covid-19 should be called ''The USA Flu''
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''The first observations of illness and mortality were documented in the United States (in Kansas) in March 1918 and then in April in France, Germany and the United Kingdom. To maintain morale, World War I censors minimized these early reports. Newspapers were free to report the epidemic's effects in neutral Spain, such as the grave illness of King Alfonso XIII, and these stories created a false impression of Spain as especially hard hit. This gave rise to the name "Spanish" flu. Historical and epidemiological data are inadequate to identify with certainty the pandemic's geographic origin, with varying views as to its location.''~Cit.Wikipedia