My take on this is that maybe the answer would be to "give credit, where credit is due". I mean, maybe it would be nice that when a white person adopts something from other culture it clearly praises such culture and recognize that whatever is using comes from that culture.

For example, many people practice martial arts from china, japan, thailand, etc. Many people who practice such martial arts always defer to the "sensei" who in turn defers to his/her/their sensei. And it all comes back to the founder of their martial arts school. So every student knows their martial arts is from X country.

It is a way to share and celebrate a part of a culture. Sure, there are more things to that and lots of nuance. But from my perspective, the more people who likes and celebrate spanish food, music or culture, the better. I don't want to gatekeep the cool things we have, I prefer to share. But I would be offended if someone take something from spanish culture and try to deny that that thing is spanish. For me appropriation means taking credit for something it doesn't belong to you.

Maybe Kylie should have explained what cornrows mean and to which culture they belong.