I’ve already made my stance on this issue known in a similar question, but I’ll talk about it a little more here.
First: I’m half Chinese, and I don’t mind if non-Chinese people go around wearing qipao.
The thing is, it’s not our job to tell people whether or not they should be offended. I put that bit in bold because I think it’s a bit of a novel idea. You may not be offended by people appropriating your cultural heritage, but others will be. Often they have good reasons, too.
If you’re not a person of colour, you probably don’t understand what it’s like to experience racism in countries where white people have established dominance. I know that I have never experienced the sort of disadvantages and discrimination that many Native American people have experienced, so I do my best to see things from their perspective.
A couple of points from the blog that explained everything pretty clearly:
“I dislike it when people…fetishize my culture.”
“I do want people to be curious, interested and involved with modern natives, and our experiences. I just would rather people know the real thing, instead of the fantasy perpetuated by a broken system that continues to actively oppress us.”
“To “honor” something by appropriating it, displays an inherent sense of superiority.”
“In the late 19th Century the nostalgic romanticizing of nature, and of the Indians that had once been found in nature, recreated Indians in all of their “natural” glory, as noble savages, mythical icons of America’s wilderness past….even though the Noble Savage is defended as being a “positive” stereotype, the result is historical amnesia and the dehumanization of real people who still exist.”
Honestly, I think the “tribute” argument is rubbish. It just means you have romanticised the idea of what it means to be a Native American person. To steal from the Wikipedia article on blackface, dressing as a stereotype “play[s] a significant role in cementing and proliferating racist images, attitudes and perceptions”.