The problem with so many of these controversies is that the people aka parasitic tourist who infect anime... Refuse to understand the cultural context behind what they're looking at.
Anime is Japanese, and cosplay is deeply rooted in the appreciation and portrayal of fictional characters. Many cosplayers put an incredible amount of effort into accurately recreating everything from the outfits and hairstyles to the makeup and appearance of the characters they love.
Yet somehow, portraying a character with a darker skin tone is automatically treated by some as an act of racism, regardless of the context or the person's intentions.
How utterly ridiculous.
There's a difference between deliberately mocking someone's race and attempting to recreate the appearance of a fictional character. That distinction shouldn't be so difficult to understand, but again sensitive parasites...
Japan has its own culture, history, and relationship with anime and cosplay. Not every controversy needs to be interpreted exclusively through the lens of Western racial politics.
And in this particular case, Japanese fans reportedly defended the cosplayer because they recognized the effort she put into portraying the character accurately.
These parasites see racism in everything... Even a damn shadow gets labeled a member of the Klan if it's shaped oddly... These Parasites always attack no matter the reason.
Context matters. Intent matters. Cultural differences matter.
How utterly pathetic that this even needs explaining.