It would be quite a transition for JJ. Most guys have time away. A holiday or chill out to acclimatise to their new future. Josh has jumped straight into his new career pathway while still able to probably out run, out lift, out enthuse most of his ex-teammates.
Gunna take him a little while to come to terms with now not being a previous Kangaroo/SOO/Club captain/mainstay of the team but no doubt he has made the right decision for himself and family.
He could well have the same sort of impact that Folksy had at the Bulldogs and achieve a legacy something along those lines.