Another Prophetic Warning by Venerable Pope Paul VI
For We can see that some of those who are dealing with this Most Holy Mystery in speech and writing are disseminating opinions on Masses celebrated in private or on the dogma of transubstantiation that are disturbing the minds of the faithful and causing them no small measure of confusion about matters of faith, just as if it were all right for someone to take doctrine that has already been defined by the Church and consign it to oblivion or else interpret it in such a way as to weaken the genuine meaning of the words or the recognized force of the concepts involved.(par 10, emphasis mine)
After giving a couple of examples, Pope Paul goes on to state something that really struck me a the answer to those who scream about how out of date Eucharistic devotion is, especially in the form of Eucharistic Adoration.
And so, with the aim of seeing to it that the hope to which the Council has given rise—that a new wave of Eucharistic devotion will sweep over the Church—not be reduced to nil through the sowing of the seeds of false opinions. (par 13)
When I was a child & teen, I remember plenty of opportunities for Eucharistic devotion in the form of Eucharistic Benediction. This was especially true during Lent when my parish had the Stations of the Cross followed by Benediction on Sunday afternoons. After I was able to start serving as an altar boy (7th grade, for me the Fall of 1967) I never felt closer to Christ than when I was serving at Benediction. I would be kneeling there on the steps of the high Altar with Jesus in the monstrance above the tabernacle.
But as time went on, that mostly vanished. We also saw how many churches were "remodeled" to move the tabernacle off to the side, or totally out of the main part of the Church. While most of the newly built churches leave much to be desired, some of them did build a decent chapel with easy access for people to visit Jesus. In that aspect, they did do the right thing, unintentionally I suspect.
For the most part, when the tabernacle wasn't all but hidden in the main body of the Church, it was relegated to, what was nothing more than a closet. It was definitely not condusive to adoration.
We also saw a rise in the failure to teach the doctrine of the Eucharist. & depending on the survey, up to 70% do NOT believe in the Real Presence. This was 1 of the things Pope Paul hoped to prevent from happening.
I won't go into the details, but Pope Paul gives an excellent explanation of the Church's teachings. He does so using the writings of many teachers in the Church, especially those of the Eastern Church.
Instead I would highly recommend reading the encyclical in its entirety. Since Pope Paul intended it to be read by "the Faithful of the entire World ," Pope Paul wrote it in a way that makes it easy to be understood by all. So there are no excuses for not reading it.
There are several quotes from the documents of Vatican II in the encyclical. That alone shows how this is the authentic interpretation of Vatican II. Thankfully, Blessed John Paul II & Papa Benedetto have worked to bring back the proper understanding of what the Council intended. We still have a long way to go. Getting the teaching of this encyclical out to the faithful will go a long way in restoring what was never meant to be lost.