Thanks for the ping. “Catholic” means universal. How could local particular doctrines that differed from one another be universal? That sure looks inherently contradictory.
By the way, why were the participants asked, or required, to sign confidentiality agreements, when word of what they are to be discussing is out there in the public domain? (That's a rhetorical question.)
At that same URL with the analysis by José Ureta that you linked to (thank you), I found, with profound sadness, the following horrible news which he delivered, which I hadn't heard previously:
This change is perceptible, for instance, in the Life to the Full sex education programme promoted by the Catholic Education Service, an agency of the Catholic Bishops’ Conference of England and Wales. Its videos for children aged 9–16 undermine Catholic teaching and children’s innocence by misrepresenting or entirely omitting Catholic teaching on sexual morality and breaking down their natural reserve and sense of shame. The presenters in the videos speak approvingly of laws enforcing civil partnerships, same-sex unions, and transgenderism, stressing that same-sex marriage and adoption by homosexual pairs are legal in the UK, giving the impression that the only grave sin the Church associates with homosexuality is prejudice against homosexual people.
[S]ome prayers and rituals of the other religions may assume a role of preparation for the Gospel, in that they are occasions or pedagogical helps in which the human heart is prompted to be open to the action of God. One cannot attribute to these, however, a divine origin or an ex opere operato salvific efficacy, which is proper to the Christian sacraments. Furthermore, it cannot be overlooked that other rituals, insofar as they depend on superstitions or other errors (cf. 1 Cor 10:20-21), constitute an obstacle to salvation.
Thank you for the link. I watched it. They rationally saw that he was properly addressing hostile questions. (I really liked when the third from left said he was tired of liberals telling him what to think.)