The “kids” may be the symptom. A rise is dysfunctional family units may be the reason.
Youths with no “rearing” because they were never part of anyones plan and born to more ir less immature child-adults, ill equiped to look after themselves, nevermind a child.

That in itself speaks to a broken society, and frankly the seeding of wider social divides. They had little chance and will perpetuate the same.

Rather bleak really and yea, not unique to Australia.