CA is such a minefield.
We cannot expect everyone to know the history of every culture, or how each culture may feel about our interest(?) in particular things, be it a hairstyle, art, etc. If someone explains to you why they/others find something CA, it's wrong to then dismiss it. Likewise, it's not ideal to automatically assume that person is being disrespectful to a culture, so jumping down their throat shouldn't be the first reaction.
It also doesn't help that what we do learn in history is often whitewashed.