“This law isn’t about catching child abusers, its about the government injecting itself into private religious matters and intentionally harassing the Catholic Church.”
Technically they would be harassing any religious group that tries to keep criminal confessions confidential. Not the government’s fault if the Catholics are the only ones doing it.
What other religion offers confession as a sacrament? Outside of a confessional if someone admits to such a crime it would be reported to the police just like it would be anywhere else. This law is directed specific to Catholics and as such could be taken to court as a violation of the 1st and 14th Amendments of the Constitution.