Where I think it all started - a layman’s perspective.
Recently Archbishop Ranjith, secretary of the Congregation of Divine Worship at the Vatican, has been in the news asking that the now common practice of receiving Holy Communion in the hand be reviewed. The practice “evolved” after the reform of the liturgy took place with the imposition of the Mass of Paul VI - otherwise known as the Novus Ordo. As we know well, the reformed liturgy has been a source of contention with traditionalists ever since.
After I returned to the Church in 1972, I attended two churches which remained intact from pre-Conciliar days - in other words, the altars were never turned around. Yes, one church was St. Agnes in St. Paul, but the other church I frequented daily happened to be Assumption in downtown St. Paul. The “new” Mass was celebrated in both churches, and as far as I could tell at the time, with little distinction in form from the TLM.

And I don’t think it is just a problem of language.
Of course the vernacular was used, which I immediately appreciated, since I could hear and understand what was being said without using a book. I liked it for the simple reason - being a new convert, in my first fervor - I had the grace of recollection and could “contemplatively” follow the prayers of the Mass along with the priest. (I know TLM people will want to correct me on this - but it is true. Also, some priests who favor the TLM are now talking about inserting the vernacular in the Extraordinary rite - it will happen.)
At both churches, Holy Communion was distributed kneeling at the altar rail, on the tongue, by the priest, just as I had been taught in my youth. Since I wasn’t a liturgist, I experienced the Mass as being the same as the one as before the Council, except of course, it was in English - which as I said, I appreciated and liked. I still do.

Turning the tables.
My point is this - and I’m convinced of it. The disrespect for the Eucharist, and subsequent lack of faith in the real presence, began when the altar of sacrifice was turned around to face the congregation, or as in many newer churches, placed in the middle of the assembly. Yet it isn’t limited to that - I think it involves a key change of focus in the “turn-around” process of the Mass as well.
In other words, the “new” emphasis in the Mass, or Eucharistic Celebration, centered around the idea that what was happening was more a banquet, a celebration - that everyone present must partake in. Much like an ancient ”love-fest” - and the partaking meant the apparently mandatory reception of the “bread and the wine”. I also think this “turn-around” was responsible for the increased participation by the laity in sacredotal duties during the celebration of the Eucharist.

The priest is a “celebrant” and lay-servers are “ministers”. (Now that’s a language problem.)
As the reform took root, lay people, most often more women than men, began taking their places in the sanctuary alongside the priest. Transporting the Eucharist from the tabernacle to the table, and then handing it out to the dinner guests who stood around or in line; the “participants” in turn took the ”wafer” from the “minister”. Eventually, as more and more license was taken, the focus seemed to be placed entirely upon the people; “Grams and gramps have been married 50 years - round of applause!” or, “A round of applause for the music ministry! Aren’t they great?” Hence, the centrality of the Eucharist, the Holy Sacrifice of the Mass, diminished and became obscured.
So there you have it - “They” screwed up when they turned the altars around and permitted lay people to have free reign in the sanctuary. It is not so much about the vernacular, or even communion in the hand - it is about the desacralization of the sanctuary and the eroding effect it had on the Holy Sacrifice of the Mass. Anyway - that is my take on it.
(Maybe my next post should be, “Liturgists with academic degrees, but absolutely no taste.” LOL! They mean well.)
[Top photo: Just a comment. For over 20 years JPII sat through some very weird liturgies and never really said anything publicly against them. No offense, but I wonder what he was thinking?]