I do not think that you can use the word trivializing to describe what happens in Jackson's story The Lottery. They whole reason the village adheres to the practice of stoning the "winner" has to do with the traditions the village has and maintains. It cannot become trivialized internally (from "inside" the story) because the villagers make the choice to keep the lottery going. Instead, we, as readers, are the only ones who can trivialize the text. We, who are not a part of it, are left to question and justify the actions of another "culture." Therefore, the message about the trivializing of the characters will be different for every reader. I myself do not think that the characters are trivialized at all. They are simply adhering to their customs.