I think that you will find that the story isn't quite so simple.
The magazine were stupid enough to run some 'background' with this photo referencing black culture and suggested that by getting an afro all women could involve themselves in this culture. But they failed to mention the history of the afro despite the fact that the story was about 70's hairstyles and the 70's were a great time of freedom for african american women and the afro was the symbol of this.
Most of the comments were about these aspects.
This para is from a fashion article about cultural appropriation and I thought I would copy/paste it as it also applies to this:
There's no problem with borrowing hairstyles from other cultures. The issue lies in the dismissal of history and context. It lies in repackaging a style as “chic” and a “new trend” when worn by white women, without any credit to the culture it was taken from — by either the stylist who created it or the editors reporting on it. This is where the distinction between celebrating a culture and appropriating it becomes fuzzy.