You'd have to go to the Browns to find a sorrier bunch of QBs.
I'm a believer in the notion that the QB position is overrated. The NFL has redesigned a lot of its rules to favor QBs, but certainly a guy could be "good enough", like Ryan Fitzpatrick, or haha- Rex Grossman and still run an effective offense. He'll just need a decent line, running game and receiving options. Paying a shitload of money to Jimmy Garoppolo or Brock Osweiler and then expecting success simply doesn't work.
I have no illusions about what will happen in a year or two when Aaron Rodgers retires / leaves. GB will probably flail around for a bit and look a little lost, before finding someone capable in a subsequent draft. It'll suck for awhile but will improve because GB doesn't typically overrate positions or undercoach.