re: should Cam Cameron be held accountable for the state of our pass game

We should see a pretty big improvement on offense next season.
Seriously, take a look at the returning 2-deep at every skill position. Jennings/Harris at QB, Fournette/Williams at RB, Dural/Quinn/Dupre/Diarse at WR. That's an impressive group, and most will also be there for 2015 at the least.

You think the passing game won't improve? You don't think those guys are gonna hook up and work on timing etc over the offseason? Even if you doubt the coaches' abilities, the players themselves should be able to tighten a lot of things up.
Quinn will regain his hands. Dural will add some muscle and improve his routes. Dupre should make a huge leap forward, along the lines of what Fournette did in midseason; or for that matter, what Dural did between last year and this. Diarse remains a better 4th WR than many team's 2nd guy, and he's just a redshirt freshman. Fournette has shown some downfield route running and catching ability you don't see from big backs in the NFL. All this will be utilized in time, you just have to be patient.

This year, we are young, and it shows. Next year, we will be young but experienced.