You might rethink this one. What church for over 2000 years now had stood against contraception, for pro-creation, against abortion, for life, against same-sex marriage, for marriage between a man and a woman, for families, against euthanasia, for keeping a person alive and now withdrawing life support systems, against women's ordination, for keeping the priesthood holy as Christ was holy?? Granted on that last one some priests fell into sin and followed their selfish desires -- but the church never changed their stance!
Which church -- the Catholic Church. There has been no shifting, no crumbling.
Oh yeh --- does the Catholic Church still teach that 25 year Episcopacy of Peter in Rome from 42 to 67 AD or has its position on that claim crumbled in light of the overwhelming evidence to the contrary???