anti-racism excess: Russian "aboriginal" skaters

Russian Ice Skaters 'Aboriginal-Themed' Dance Controversy:

Russia's Oksana Domnina and Maxim Shabalin Aboriginal-themed costumes and dance stirred controversy during the Vancouver Winter Olympics Feb. 21, 2010. Australian media cited aboriginal leaders as complaining that the routine contained inauthentic steps and showy costumes. "It's very offensive," Sol Bellear of the New South Wales state Aboriginal Land Council said. "We see it as stealing Aboriginal culture and it is yet another example of the Aboriginal people of Australia being exploited." Their coach, Natalia Linichuk, responded to the accusations, saying, "Aboriginal, it translates from Latin language, it's from the beginning. We try to represent a picture of this time when Aboriginal people start being in the world. It's no customs, no country, nothing." (Reuters)

Why are people who complain about cultural appropriation so quick to impose their concepts of racism on other cultures?