Divorced Catholics, seeking annulment and attending Mass regularly, have had their lives ravaged. They need mercy, not rules. We don't shoot our wounded. Denying them communion on assuming they are in a state of mortal sin is phariseeism, IMO, because the Church cannot say who is and who isn't. Furthermore, the rules for receiving are disciplinary, not doctrinal, and are subject to re-wording. Close pastoral supervision is a requirement for remarried to receive, and it is not for outsiders to tell the Church what the rules should be.
Circumstances have changed. The world has changed. Culture is constantly changing. The Church speaks to the times, she is not freeze dried in a 16th century mindset. "Change" is on the surface.
John 14:26 – Jesus promises that the Holy Spirit would teach the Church (the apostles and successors) all things regarding the faith. This means that the Church can teach us the right moral positions on such things as in vitro fertilization, cloning and other issues that are not addressed in the Bible. After all, these issues of morality are necessary for our salvation, and God would not leave such important issues to be decided by us sinners without His divine assistance.
John 16:12 – Jesus had many things to say but the apostles couldn’t bear them at that point. This demonstrates that the Church’s infallible doctrine develops over time. All public Revelation was completed with the death of the last apostle, but the doctrine of God’s Revelation develops as our minds and hearts are able to welcome and understand it. God teaches His children only as much as they can bear, for their own good.
John 16:13 – Jesus promises that the Spirit will “guide” the Church into all truth. Our knowledge of the truth develops as the Spirit guides the Church, and this happens over time. You insist it's change when in fact it is development, it only appears on the surface to be change. I mean doctrinal development, not changes in rubrics or customs.
Development of Catholic Doctrine: A Primer