I think the reason a lot of people in this thread are getting frustrated is this:
most people in this thread already do play POC. They also play white people. They play all kinds of characters.
So the implication that 'if you have a white character right now you're a bad person and racist' is what's ruffling feathers. Is that what @egg intended? Maybe not. But that is how it has come across.
The whole 'MUsSoWhite' and implied going onto games to shame any PC who has blue eyes (I mean, as discussed, that'd be a bad idea on a place like Arx where you can be any color of skin with any color of hair with any color of eyes because it's fantasy so please don't do that there) is just a bad take on encouraging diversity.