Trey Lance may not be the starting quarterback for the San Francisco 49ers in 2023 due to several reasons. Firstly, despite his potential and talent, he is still a relatively inexperienced player. Coming from a small college program, he needs time to develop his skills and adjust to the complexities of the NFL. Secondly, the 49ers have a competitive roster and a win-now mentality. They may prefer to rely on a more seasoned quarterback who can maximize their chances of immediate success. Additionally, injuries have plagued Lance in the past, raising concerns about his durability and ability to stay healthy throughout a grueling NFL season. The 49ers may opt for a safer choice to ensure stability at the quarterback position. Lastly, the coaching staff may not believe that Lance has fully grasped their offensive system or displayed the necessary consistency and decision-making required to lead the team. Consequently, the 49ers may choose to start a more experienced and proven quarterback, allowing Lance to continue developing and learning from the sidelines.