The Sacraments have been given to us by Jesus. The only heresy is in renouncing them.
The Reformation began with Catholic priests who identified the heresy implicit in the RCC dogmas.
The Reformation succeeded because individual men gained much according to their individual wishes. Luther's wealth and Calvin's power are examples.
The Church though was much broader than Roman Catholicism at least since the 7th century. Proof positive the RCC was not the single arbiter of His Will.
Since the Catholic Church never claimed it, I will agree with you.
Never did Jesus Christ command we confess our sins to a priest rather than to the Father through faith in Christ.
The act called a sacrament of confession to a RCC priest “confessor” in the RCC is heresy.
The RCC condemns anybody who disagrees with her. Since she fails to respect the acts of God the Holy Spirit independent of her, she condemns herself.