It’s a hot topic. Many people seem confused by it. Here’s my take:

I have developed a 3 point litmus test for cultural appropriation: Context, Consent and Equity.
Is the design shown in an appropriate context; is it not disrespectful of the original source?
Is the design something that culture has given consent to share?
Are the profits and credit shared with the originators of the design in a way that is fair and equitable to all parties?

If the answer to any of the above 3 questions is “no” it’s probably cultural appropriation.If all three questions are “yes” then it isn’t, it’s probably cultural exchange.