Theatre or theater is a collaborative form of fine art that uses live performers, typically actors, to present the experience of a real or imagined event before a live audience in a specific place, often a stage.
It is not okay. Unless the artist learned about the culture but if they don’t they are doing cultural appropriation. It definitely matters what race is involved a white artist can’t do a Chicana (Mexican culture) music. Even if credit is given they should respect the culture
Something that is seen through unwillingness
It is Picasso ! He influenced Picasso