Simpson landed in about as healthy a rookie situation as a quarterback could want: Stafford is still the starter, McVay is teaching the details, and Bennett is taking the immediate pressure of being the only backup. His job is not to force the timeline; it is to turn his college aggression and ball security into command of an NFL offense.
Strengths: Productive, poised college starter with demonstrated downfield timing and strong turnover avoidance. His big-time-throw profile gives him the attacking element a future starter needs, and he has enough mobility to help concepts stay alive.
Weaknesses: The Rams system asks for a lot verbally and mentally, and the rookie still needs repetitions to own it rather than recite it. The backup competition shows that readiness for a one-game emergency role is not settled yet.