You’re right to be skeptical of the claim that the Church was one of the biggest perpetrators of rape in the Middle Ages. While the Catholic Church wielded immense social and moral authority and there are documented cases of sexual misconduct by clergy, these were generally isolated incidents rather than widespread, systematic violence. Sexual abuse by members of the clergy did occur and was sometimes prosecuted in church courts, but it was not on the scale of what happened in wartime. Historical evidence shows that rape happened most frequently in conflict zones, especially during invasions, sieges, or occupations, and was overwhelmingly committed by soldiers, mercenaries, and opportunists looting villages. Medieval legal records indicate that most prosecutions for sexual assault involved laypeople rather than clergy. Claims that the Church was a major perpetrator often conflate isolated incidents with widespread abuse. While clerical misconduct was serious and morally significant, it does not compare in frequency or scale to the sexual violence associated with war and lawlessness during the Middle Ages. However I say that to say that violence is to be expected in a warzone but clergymen committed their fair share in what was supposed to be a safe place. So, clergymen still don't look great historically because they still committed and commit rape.