Sounds like it would make sense considering his defensive report card hasn't been great.
Kade last played at 20. Most 20 year olds aren't great defenders. He played Cup (and NRL) mostly at FB where talk and directing others could be argued as more important than your own ability to tackle.
He'll be 22 for next season, he's added some size since he last played which would help with defence.
Most young players clubs are weighing up their attacking prowess and cheap contracts vs defensive deficiencies (with a hope the deficiencies are fixed with time).
If we feed him into NRL as a centre to start with it's hard to say how much defensive pressure that takes off him. Centre can be considered one of the hardest spots to defend because while the half is the target of a lot of plays the outcome of that is often to create numbers outside the half, leaving the centre as the man to diffuse the 3 on 2. Although there is the benefit of that putting him up against halves, centres and fullbacks more often than second rowers, so may be less physically challenging while he adapts.
Things don't get much easier moving in a spot to half unless you have a good defender as your second rower.