Perhaps whites (because let's face it all this is mainly  being directed at whites) should just totally ignore indigenous culture; don't talk about it, don't write about it, don't put native characters in their literature, after all we wouldn't want to appropriate their culture. Then listen to the howls of protest how native people are being further marginalized. 

 I suspect his discussion is being lead by people of mediocre talent who can only get attention by being outraged at the success of people more talented than them.