Does it really matter if Jessica A. Krug is "black" or if she has "diaspora credentials"?
If Jessica A. Krug is from a *hegemonic* group, she may have been first-eye witness to the non-representation of other *marginal communities* in the halls of power, and decided that she would use her well-developed voice to defend these not-in-the-room-when-important-decisions-are-made
groups.POSITIVE CULTURAL APPROPRIATION
If so, than I can support this kind of cultural appropriation, since its cause is sincere. Maybe a single person like Jessica A. Krug can't overthrow the system to make it more balanced in racial representation (with the goal of finally eradicating this constructed social hierarchy) - but a single soul like herself can
work to make it "overthrow itself" by acting as a Robin Hood double-agent from the inside
."Who can speak for us, the polar bear community?"NEGATIVE CULTURAL APPROPRIATION
But Elvis Presley, as a negative example of cultural appropriation, simply ripped-off black "style and cultural development" that had been blocked - and continued to be blocked - by race-based radio stations in the USA. In this case, the "appropriation" is a theft as there is no recompense to the original creator. Black artists received very little compensation for their innovation, and then a "black artist imitator" cleaned up financially (and food-wise).CONCLUSION
In the cancel-culture diva
example of the OP's prof, Jessica A. Krug, there has been a sincere effort on her part (I think there has...) to compensate the origin of the cultures being both appropriated and celebrated. Or would someone argue that her effort was insincere or mis-directed?