Ms. Blue must really lack a sense of irony because she failed to object to being cast as Violetta which is a racial affront to white French courtesans everywhere.
Bizet inadvertently stole the famous “Habanera” in “Carmen” from Yradier (a Spaniard), from Yradiers’ “El Arreglito”.
Carmen’s Habanera - https://m.youtube.com/watch?v=8GD63RuQduc
Yradiers Arreglito - https://m.youtube.com/watch?v=9l0e3M3Ek4c
No the point is that when they cast a black woman as Violetta, which is not infrequent, they don’t put her in whiteface. Nowadays as a rule, white performers in opera don’t do blackface either.