Different meaning to 'reality'.

ie., social-historical vs. material-historical.

Since black vikings are not part of material history, the model is not reflecting reality.

Calling social-historical ideas 'reality' is the problem with the parent comment. They arent, and it lets the riggers at google off the hook. Colorising people of history isnt a reality corrective, it's merely anti-social-history, not pro-material-reality