Even if they won the Super Bowl. I don’t see Trey getting Bledsoe’d. The reason I say that is that even if Brock Purdy plays well the rest of this season, regardless of how the season ends. I think the general consensus is going to be can he do it and continue to get better in season 2. So even if they won the Super Bowl, I couldn’t see them moving him unless they got some crazy offer picks wise.
I remember they thought they had the next big thing and their qb for the next decade in Kaepernick after he burst on the scene in 2012. But once he got figured out in 2014, things went downhill fast. I won’t fault him for struggling with the trash rosters and coaching in 2015-16, as no one was winning with that dumpster fire. But once defenses figured him out in 2014. They went from legit Super Bowl contenders to a .500 team.
Even if they happened to win the Super Bowl (which would be the craziest story ever in its own right). Purdy would deservedly be the starter next season. But once all the emotion and excitement was done, I’m sure they would keep Trey around to see how things go in year 2 while keeping all options open.