Sherman Alexie characterizes Thomas as a storyteller whose tales illustrate the theme that storytelling shapes and helps people understand their lives, thereby highlighting its important role in tradition, culture, and identity.
In Sherman Alexie's "This Is What It Means to Say Phoenix, Arizona," the character of Thomas is used to communicate one of the story's main themes regarding the significance of storytelling.
Thomas, often seen as an outcast on the reservation due to his role as a storyteller, is not depicted as less intelligent than Victor, but rather as someone who possesses a different kind of wisdom.
Through the stories that Thomas tells and his persistent desire to be heard, Alexie conveys the theme that storytelling is an essential part of human existence, helping people to shape and understand their lives.
It is through Thomas's tales that vital aspects of tradition, culture, and personal identity are explored, demonstrating the inherent value in listening to and sharing stories.