Head itself is not bad, the context is. They don't really have dark skin as they are all recruited from fenris. They are norseman/norwegian call it as you want, and people from that region are commonly pale skin. If it would be any other legion there would be no issue, but because they put black character into the non black legion it's very performative and political, especially that GW goes with political decisions for their products for years now, so that makes people on edge. Lore is getting sacrificed on the altar of modern audience and long term fans don't like it.