What underlies this whole uproar?  It is, I would suggest, the false belief that Catholic clergy are engaged in widespread mutual absolutions for sexual assaults on children.  It’s the kind of paranoid visions of institutional evil that are still levelled against Jews, or Masons, or Illuminati - the sense that out there, somewhere, is a vast and sinister organisation.  It’s a kind of hysteria.
The confessional need to be sacrosanct.  Apart from tradition, one of the reasons for this is precisely that its confidentiality encourages sinners to be accountable for their sins and transgressions.  If the law is changed it will not lead to wholesale denunciations to the police; it will simply lead to people staying away from confession when they ought to go. 
I am the more surprised because although there certainly has been institutionalised abuse of children in Catholic institutions in Australia, probably the most serioous abuse that went on for decades was when the state authorities tore Aboriginal children from their families in the belief that they should be brought up instead in ‘civilization’.  Not quite the same heart-searching or passion about that, is there?

As an Australian protestant who has no interest in the Rite of Conssion, Father Tee, I would go a bit further:  I cannot think of any recent media report which has suggested there have been actual cases of a child abuser confessing to child abuse in the confessional.  Which does rather beg the question, what is this proposed law supposed to accomplish?

Except of course that once it becomes law then definitely no child abuser will confess to his/her crimes in the confessional, in fact they will probably never go to confession at all.  So again, this makes me wonder what this is supposed to achieve.  And note that as an evangelical Anglican, I have no interest in the Rite of Confession as such - we don’t practice it and we don’t care about it.

“I am the more surprised because although there certainly has been institutionalised abuse of children in Catholic institutions in Australia, probably the most serioous abuse that went on for decades was when the state authorities tore Aboriginal children from their families…”

It may well go much further than that.  There are constant rumours of serious abuse happening right now in state institutions, but because the perpetrators are employees of the state, they are never investigated.  Hopefully this Royal Commission will comprehensively go over the State Departments of Community Services and other government bodies, not just the Roman Catholic Church.