"In the 1917 letter, George V declared that the great-grandchildren of the monarch would no longer be princes or princesses, except for the eldest son of the eldest son of the Prince of Wales.
In our current situation, that means that Prince George, the eldest son of Prince William, automatically became a prince, but not Archie, even though they are both great-grandsons of the Queen.
Under this protocol, Prince George's siblings - Charlotte and Louis - would not have received the title either." https://www.bbc.com/news/uk-56325934 So, only one great-grandson of the Queen inherits the prince title, not a child who hasn't a chance of becoming king. And no, not because of racism, not because he's 12.5% Black. This is why it's so difficult to take Prince Harry and Megan Markle seriously.