All this stats stuff is interesting, and I’ve read it before (Outliers the book is really good on it) but I’m not sure it’s relevant once you’ve actually been drafted and given the type of player Kyle is (big and strong - at least he is now).
The idea is that when you are born in January and you first go to Auskick you’re 5 years ie 60 months old. A kid born in December of that intake year is 4 years 1 month old ie. 49 months old ie. 18% younger which is huge in terms of co-ordination/physical development. So the January kids monster and outplay the December kids, get the footy more, develop more, eventually when they start playing in sides (at what? 8?), are still materially older and more developed, get picked in the A side, get better coaches and train an extra day or two a week, and so their paths diverge from there and you see a lot of early-born people in professional sports.
It’s pretty well documented and understood but I’m not sure it matters given someone in this discussion has actually made it (making it in this case meaning being drafted).