What the heck? Is it improper to even describe the issue? I'm 'white', which is ultimately a silly name, since I'm actually some variation of pale tan. The word 'black' to describe people isn't exactly uncommon or inappropriate. Race is a constructed thing, but that doesn't mean people don't use it, and on average, being 'black' implies skin colors that range from light to dark brown, but almost never total obsidian black or grey. As GP mentioned, the point is that the color balance looks off in the initial image anyway. These colors matter because they're reduced to a floating point number that becomes an input features for the (likely) neural net.
Can you explain why GP's statement is wrong? The scope of 'we' clearly includes everyone, black and white. If you thought it was awkwardly phrased, that's one thing, but jumping on the GP seems to indicate you gave him no benefit of the doubt in the first place. I mean, it's the Internet. If we can't start from the assumption that people are posting in good faith, discussion here isn't going to work.