It was more than just Ron, blame also goes to our previous 2 GM's trotting out people like Bryon Bell, Nate Chandler, Matt Kalil, to protect his blindside more than anything that got Cam beat up . Cam played best when he had designed runs and defenses had to account for that.
Some blame can also go to Cam has he had a tendency to hold onto the ball too long in the pocket instead of the check down which he started to use more frequent in the latter portion of his career here.