Don't be silly. We should expect demographic distributions to match. We should find matching distributions in all walks of life and granted, there will be some variances. We will not expect perfect matching but if 12-13% of the population makes up 39.4% (I googled it this time, sorry for assuming it was 2/3), that seems like a red flag. It's very disproportionate and it's important to recognize this anomaly in the data and postulate what is causing it.
If the number was like 18%, I wouldn't be bring this up. It's just, something seems off. And subtle racism is a thing too.