Curiosity led me to look up just how bad they've been, and woof. Below are their starting QBs over the last seven seasons along with their stats:
2010 (184.3 ypg)
Jeff Brantley - 2061 yp, 9 td, 10 int
2011 (185.7 ypg)
Jeff Brantley - 2044 yp, 11 td, 7 int
2012 (146.3 ypg)
Jeff Driskel - 1646 yp, 12 td, 5 int
2013 (170.9 ypg)
Tyler Murphy - 1216 yp, 6 td, 5 int
2014 (179.9 ypg)
Jeff Driskel - 1140 yp, 9 td, 10 int
Treon Harris - 1019 yp, 9 td, 4 int
2015 (206.9 ypg)
Treon Harris - 1676 yp, 9 td, 6 int
Will Grier - 1202 yp, 10 td, 3 int
2016 (215.8 ypg)
Austin Appleby - 1447 yp, 10 td, 7 int
Luke Del Rio - 1358 yp, 8 td, 8 int
So, over the last seven years, they've averaged 184.3 pass yards per game. They've had a qb eclipse 2000 yards TWICE (both the craptastic Jeff Brantley), and the most TDs a QB has slung in a season is 12. That's incomprehensibly bad in an era when offenses easily eclipse 400 yards a game average. And to make matters worse, their running game hasn't even been average during that time. If they can't choose between 3 qbs going into their high profile opener, I can't imagine they'll be much better this year.