What evidence is there that spying on the public will reduce child molestation? When you consider that the majority of perpetrators are family members how would spying on the publics chat help detect or prevent that? I don't think there are many child molesters boasting about it tbh. Would such a law prevent child molestation or prevent molesters from talking about it?

There is no evidence and little reason to believe this will protect children. Before infringing on innocent peoples privacy there must be some evidence that it will actually help protect children. There is no evidence to support this nor calls to study the efficacy idea. Makes me think protecting children is not the intention of their spying.