First world problems.  Most of the world worries about whether or not it will have enough to eat.  We worry about whether other people should be allowed to discuss our "culture", whatever that is.  Culture is just the way people live.  It changes over time.  Often, what we take for "culture" is just the archaic remnants of beliefs and practices that long ago ceased to have any validity, and which are sometimes the source of conflict and "inappropriate cultural practices" (e.g. genital mutilation--in both females and males ((although we condemn the former as abuse, but continue to allow the latter under the banner of "religious freedom")).  The issue of "cultural appropriation" is just another form of censorship, and is based primarily on our paternalistic telescoping of our preconceptions on those we magnanimously deem worthy of our support.