People said the Same about Aaron Rodgers when he suffered a few injuries, how did that play out?
1. No they didn't. No one ever analyzed a trade market for Rodgers based on a back injury when better and younger qbs were also available, which is the context here. The conversation isn't "can qb x recover from injury?" but "why might teams be hesitant about acquiring him?"
2. Rodgers recovering from whatever injury you're hypothetically talking about (he never had anything chronic like a back injury afaik) has no bearing on how teams feel about Stafford. Stafford has been starting since, what age 21? Rodgers sat for 3years. Very difference careers. Different players, different injuries, different just above everything.
3. I like Stafford all things considered. I think he gets a bad rap after being on so many bad teams. I hope he goes somewhere like indy and wins big. But it's not at all difficult to understand why the market isn't that hot for him right now
That said, the article expecting 2/3 of the league to be interested and have expressed said interest before the superbowl is pretty absurd