Washington D.C., Jun 11, 2019 / 03:01 am (CNA).- Catholic commentators have welcomed a Vatican document warning that gender theory is a cultural and ideological revolution that undermines both human dignity and the right understandings of sexual difference and complementarity, though the document was not without its critics. “There’s a lot of confusion out there right now in regards to gender theory in education and this document provides much-needed clarity about the truth of the human person,” said Dr. Joan Kingsland, a moral theologian and curriculum advisor for Ruah Woods, an Ohio-based organization focused on St. John Paul II’s Theology of the Body.