Cultural appropriation was always a thing thorughout human history and will always be a thing so the SJWs need to educate themselves and realise that it is actually a good thing. Different cultures have been inspired by other cultures and adapted their ideas since the dawn of time.
The most prominent examples being the mesopotamians inventing agriculture and then every other culture adapting the the new form of food cultivation and so the era of hunter-gatherers was ended. Or Western Europe starting the industrial revolution and it then spreading everywhere.
Another important example is when the japanese took all defining elements of western society like their education system, law system, way of thinking and their technology during the meji restoration and made them their own and thus transformed Japan from a poor medieval crime ridden country to a rich & technological powerhouse with one of the biggest economies in the world.
There is nothing wrong with liking elements of other cultures and then making them your own. It has been always a thing. All major empires/civilizations took ideas from others: Egypt/Mesopotamia -> Ancient Greece/Persia -> Roman Empire -> Islamic empire -> China/Western Europe -> America.
TL;DR
Cultural appropriation = Talent