While I agree with the point of the article that current genetic imbalances are horrifying, underappreciated and getting worse (and mostly not race based), there's still plenty of suffering to be had due to racism.
If race realism is correct then job quotas, immigration and education policy will cause a fair few problems, and if it's wrong then the very large amounts of suffering enduring by some ethnic minorities will be fixable.
So while this is far from the most important issue (that goes to things like ageing, possible dysgenic trends and the possibility of true AI), it's still pretty important by the standards of modern policy debates.
The article is perhaps extreme and overly performative, but I think the central idea of "races" not surviving the near-future is a good one.