I see it is having Stafford is a luxury. You can try to draft his replacement well still having a quarterback in place that, if you build a team good enough around him, you can still win.
I still have a sliver of hope that Stafford can take a big step this year. Some guys take late career jumps. Young. Warner. Elway. Maybe #9 can be one of those guys. But even my patience is wearing thin.
Warner was 28 but his first year starting, 2nd in league. Elway? Remember stats and rating were different back then. They didn't have players rated 100. Steve Young was at the age but it was his first year as the guy and he was a stud. Outside the early year win TB.
Stafford has had 141 starts.. Maybe there are some legit late bloomers but the ones you listed not sure is a good comparison.