Of course, what actually happens is that the marginalized people who were appropriated from remain marginalized, while the dominant culture who took their stuff, watered it down, and adulterated it with their own preconceptions and biases end up being regarded as the actual experts on it. Like, we can see this in the New Age movement all the time; EG, where a bunch of white people projecting aliens onto other cultures’ mythologies are regarded as having the most objective knowledge on what those myths are actually about.