Okay, so what's wrong with slapping a number on a strain name? COVID-19 (COrona VIrus Disease 2019)

Nothing, but they don't know the strain yet.

BTW, COVID-19 is the name of the disease, Coronavirus Disease 2019. The virus is SARS-Cov-2 (Severe acute respiratory syndrome coronavirus).

Only works if you isolate the strain.

Once they discover what the causative agent is for disease X, they will name it something that someone will call racist eventually and we'll be able to reference it directly.