I have to say, the lack of reverence was NOT caused by Vatican II. Step outside of the Church and take a good look at history at this time, particular here in America. Free "love", rampant drug use, and a general sense of "I don't need tradition, I know what's best" pervaded our entire culture. Society was in the process of massive changes, and we can see many of the effects today in our media, our educators, etc.
Have you read the Vatican II documents? They are extraordinary. The eternal truths of our faith are presented to a changing culture that is much less interested in the One, True Faith. The mass in the vernacular has been difficult to apply (due to some weak translations) but all in all have encouraged a greater understanding by the laity of what is going on. Vatican II encourages more lay participation in evangelization and parish ministry, which is wonderful. The role of the priest is administering the Sacraments and shepherding Christ's flock, the laity SHOULD be involved in evangelizing, we are ALL disciples, not just the ordained.
The bad religious education, liberal theology, and other things we have seen in the wake of Vatican II are NOT a cause of the council and documents themselves. They are 1 products of the general elitist, "I can do what I want" mentality that has taken over our society and 2 the fact that many priests and religious left the Church during this time, leaving teaching, theology, etc. in the hands of liberal, perhaps incompetent people.
So, to answer your question, did Vatican II cause these problems? Absolutely not. In fact, if the same liberal and often devastating changes had occurred and the Church had NOT implemented Vatican II, what would we have? The same culture that rejects tradition and history...looking at a Church that worships in Latin, and seems utterly unapproachable to the "modern" person.
It's great to worship in many pre-Vatican II traditions. But, remember, they are traditions with a lower-case "t". They can and often should be changed; they are not essential to Catholic faith. I love the prayers in Latin, Gregorian chant is my favorite type of music, but there is room in the Church for many tastes and "t" traditions.
Looking at history, it has general taken the Church about 30-50 years to effectively and successfully implement the changes of a major Church council. Given the history at the time, I believe we are just now getting to the point where Vatican II is seeing it's proper role, mostly because now people have read and understood the documents, rather than misinterpreting them as a liberal free-for-all, which it was never meant to be.
I strongly suggest everyone pick up a copy of the Vatican II documents, it can be found paperback rather cheaply, and it is well worth the study.
In Christ and Our Blessed Mother,