As a fan, the skin colour or ethnic background of Cubs players doesn't matter at all to me, and I assume the Cubs FO doesn't make any player decisions based on skin color. I hope this never changes.
I assume the MLB wants to appeal to everyone as a business/sport, so it does suck that the longtime problem of the decreasing participation of African-American players in baseball seems to be an issue that hasn't improved much. I have no idea the reasons for this. I doubt this is directly the fault of the MLB, who have made efforts over the years to help this issue, its probably just the changing choices of youth, the rise of other sports the last 30 years, and maybe some broader socioeconomic factors. But i'm just speculating. It would have been interesting if this article explored this issue more.
For those that care about skin color, the link in the article said 49% of the MLB.com top 100 prospects were non-white, for whatever that's worth.