The quote reflects the idea that the fortunes of individuals can vary greatly, regardless of their true worth or capability. The duchess employs duennas, who, despite their seemingly lesser status, possess qualities and virtues that could elevate them to countesses if circumstances allowed. It emphasizes the randomness of fate and social standing.
Additionally, the speaker cautions against speaking ill of duennas, particularly the older ones, suggesting that their life experiences and wisdom are often overlooked. The remark highlights the theme of respect for all, regardless of their societal roles, and serves as a reminder that everyone has intrinsic value shaped by their experiences and character.