> adding that the agency’s “best practices for naming disease suggest avoiding `causing offence to any cultural, social, national, regional, professional or ethnic groups.”’

The list does not include brands.

Also, there are different measures of confusion: "Nu" being confused with "new" is on a phonetic level and could make actual communication difficult. "Delta (the virus)" vs "Delta (the airline)" is semantic confusion and most people are quite capable of distinguishing those unless they deliberately want to be confused.