The core of the season’s Wikipedia summary, however, centers on the dual arcs of Mary Cooper’s crisis of faith and Sheldon’s premature departure for Caltech. While the wiki dryly states that "Sheldon moves to California earlier than planned," the emotional weight is in the implication. This separation from his family is the final stage of Sheldon’s emotional stunting. As the wiki notes the presence of older Sheldon (Jim Parsons) as a narrator, viewers understand that this season is not about the boy genius conquering academia; it is about the boy failing to say goodbye.
The finale provided closure to the Cooper family's story while paying tribute to the 14-year legacy of the character across two shows. young sheldon season 7 wiki