What does Princess Charlotte have to do with depriving Prince Edward of the title of Duke of Edinburgh?

What does Princess Charlotte have to do with depriving Prince Edward of the title of Duke of Edinburgh?

King Charles will not grant the title of Duke of Edinburgh to his brother, Prince Edward, but will retain it for Princess Charlotte.

This was the most prominent speculation about the reason for withholding the title from his brother, and according to royal sources, the king prefers that the title go to Princess Charlotte, as she is the second child of the Prince of Wales and ranks third in the line of succession, after her father, Prince William, and her older brother, Prince George.

During the past few days, an uproar arose because of King Charles' intention to violate the will of his mother, Queen Elizabeth, and her husband, Prince Philip (Duke of Edinburgh), who pledged to grant the title of Duke of Edinburgh to their youngest son, Prince Edward, who bears the title of Earl of Wexes.

Will King Charles violate Queen Elizabeth's will and deprive Prince Edward of a new title?