People have always been feeding. But I think since the Bungalows opened, the feeding has increased, which is part of the problem.I JUST found this.
Gator Attack: Disney Knew of Problems, Staffer Asked for Fence at Lagoon (Exclusive)
Yes, feeding, that might be the issue.
That said, i'm not going to blame Disney for this. I don't really believe it was anyone's fault. I know it's natural to try and find fault, but sometime it's just not there.