Those first 2 paragraphs contradict eachother. First you say you dont care what colour the models skin is, second you say if GW make dwarves any colour other than white you would be annoyed? Hmm.
Why is it that dwarves all have to be white to you? You can argue either that they're so similar to humans that they should also have various skin colours, or you could say that because they're not human that they shouldn't have to stick to human skin tones at all.
It's amazing to see how much it means to some people when they see themselves represented in media. The only thing that feels forced to me is the people who are so resistant to the idea of whiteness being decentralised in their favourite piece of media. White isn't the default.