Its a topic with a lot of grey area and not as many solid answers as we would like in the medical field... but here are a few thoughts presented in a pretty scatty manner:
Unfortunately there isn't too much concrete evidence on ACL injuries to pinpoint exactly why we are getting so many. I believe the club had an internal investigation into it last season but I don't know what the conclusion was.
Some athletes are certainly more predisposed to ACL injuries due to things like having weak hamstrings compared to their quads etc. but that is something that would have been rectified by the medical team with Jodi considering his history... Other things such as the wideness of your hips may play a part
, but again there isn't too much evidence about it and this can't be trained out anyway.
HOWEVER
I would be optimistic for Jodi and his career... depending on the collateral damage sustained to the other structures in his knees. There are various recent cases of real top level athletes (I'm talking Premier League wingers and fly halves in Rugby Union) who have suffered fully ruptured ACLs but elected to have conservative treatment (essentially just physio and strength and conditioning) rather than surgery to fix the ACL, and basically gone on to have long successful careers without the ligament really being there at all! It's an approach that is gaining some traction atm, and although (as per) there isn't much, if any, evidence about it in elite athletes, it's a route I would expect Jodi and the people around him to really think about, especially considering the lack of success he has had going the surgical route.
Having said that the article says he will be operated on by the best surgeon in Europe... So maybe there have been issues with previous operations that he and the club are aware of and believe they can do better. Even if they do go for surgery to fix his ACL again, and it goes AGAIN, he does have options beyond surgery!
Basically, his future career depends more on the general state of his knees (cartilage, bone and other ligaments etc.) rather than the fact he keeps doing his ACLs...