Here's a simple way of looking at it...
If you are on the side that Flynn is a no brainer good starting caliber QB, then we should be seeing great offers in the near future (ie 1st to 3rd rounder). If somebody offered GB a 2nd or 3rd rounder for Flynn, how many of you really think they would turn that down, knowing they could acquire a cheap, starting caliber player with that capital? Honest question.
If you are on the side that Flynn is god awful, then why would JS pay good money to acquire him in FA? Yes, he let him walk without an offer, but ultimately paid the man. If he was terrible, why would any GM cough up $ for him? Why is he still in the league?
So, I'm going out on a limb and saying that reality is probably right in the middle of this debate. That being, Flynn has been a good backup QB, with pretty underwhelming physical skills (I didn't say bad) by starting QB standards, who probably has the ceiling of a low end starting QB. Does this make him terrible? No. Does this make him the GOAT? No.
So, really the question is, how do you think other teams view Flynn? I think if some of you take the time to look at what the Chiefs are looking at, you might get a more grounded version of what Flynn truly is. This time last year, would you want to give GB a 2nd rounder for Flynn? My honest answer is no. I wouldn't mind taking a shot with a 5th rounder.