What does the quote chivalry is dead mean?

The phrase "chivalry is dead" expresses the idea that the traditional code of conduct associated with knights and gentlemen, characterized by bravery, honor, and courtesy, is no longer relevant or practiced in modern society. It signifies a decline in values such as respect, gallantry, and selflessness, particularly in the context of how individuals treat one another. The phrase is often used in a nostalgic or lamenting manner to highlight a perceived loss of traditional values and social etiquette in contemporary times.