Secrecy is the Catholic Canon Law right. The priest-penitent privilge is American law and it goes back to 1813. The rules of evidence reflects the constitutional interpretations by the Court. You are looking for a result, not the rule of law. That is no different from the pro-lifers who don’t like Roe. The Secrecy of the Confessional in the Church does not prevent a subpeona of chancery personnel files.