"Generation X is dead. It has come to mean anyone aged 13 to 55 years old"

In this quote, William Gibson is suggesting that the term "Generation X" has lost its initial significance and has actually ended up being a broad label for anyone between the ages of 13 and 55. This declaration suggests that the generation that was when defined by its special attributes and experiences has now end up being a catch-all term for a wide variety of individuals. Gibson might be discussing the altering nature of generational labels and how they can lose their significance gradually. He may also be highlighting the fact that age is just a number and can not fully catch the intricacies and variety of individuals within a certain age range.