Andy, you're wrong.

You have to know some church history to understand the reason for this recording of Mass.
For 2000 years people attended Mass as spectators, for a lack of a better word.
They understood fully that the priest was offering Sacrifice on their behalf but they didn't really participate.
The common practice up to the 1950's was:
ADORE till the gospel
Give THANKS till the bell,
At Communion as PARDON
Then all your WANTS tell
 
Old prayer books prior to 1900 (if you even had one and could read) often didn't even have the Mass in them, only MANY prayers that could be said during the Mass. Or you prayed the Eucharistic Rosary.   Check out the 1904 Prayerbook for Religious which lists over 26 different methods/ways  of attending at Mass. https://archive.org/details/prayerbookreligi00lasauof\
And as this book was for religious, it included at the back, Epistles and Gospels only for Sundays.
 
 That is why the altar server rang the bells when something important was to happen, so people would pause their prayers and pay attention.
 
Then Pius X declared he wanted the faithful to participate and follow what was happening during the Mass.
So in the 1920's (my book is dated 1927) came the first daily missal called "The Missal".  It was later renamed the St. Andrew's Missal and more prayer books started including the actual Mass.  But the general population still really couldn't follow very well so they continued their old way of attending Mass.  (daily missals didn't really make an appearance until the 1950's)
 
In the 1940's each parish in North America was handing out newsprint type booklets explaining the Mass which included charts etc.
 
This beautiful Mass, narrated by +Fulton Sheen, was recorded and copies were sent to each diocese in the U.S. and Canada, and each parish church, on a rotating basis, would show it in the church basement on a projector.  This guaranteed all people were being taught how to participate.  This was the ONLY way to reach all the people and was quite an undertaking, after all there were no VCR's or DVD players or even TV back then.  It was a massive undertaking.
 

I'm just glad it's still available for viewing.  I haven't seen a church packed like that since I was a kid.

This had nothing to do with conditioning for the vernacular!

I understand what you're saying but you have to realize what it was like living back then.
Getting people to use a missal was "an organization wide, standardized religious roll out", right from Rome!

Parishes then had thousands of people.  The priest couldn't possibly teach all the parishoners, much less individually.  And to add to that most parishes had multiple ethnic groups.
The schools taught the Mass during religion class which was a big help.
 
And some priests (quite a few I think) were not teachers.  They could preach but not teach.  Besides much of this program was teaching the proper names and describing things that are now in the front of most missals, for example priests vestments, articles used at Mass, the Sanctuary etc..... very time consuming if all priests had to teach that.  Then there was the problem of getting everyone together to learn.....good luck.  Much easier to have the instruction booklet prepared to be kept in the home.

Of course ( as discussed in other older threads here on CI) once Pius X expressed his desire for people to participate at Mass with missals, the Masons jumped at the chance to highjack the idea and push for the vernacular participation.

Yes stuff happened but not everything started out as a diabolical plan.  And how much better/easier to narrate a Mass and have people watch it.  You certainly didn't want every parish narrating a Mass.

I know the Traditioninaction article you posted and the whole series by Dr. Carol Byrne, but what does it have to do with the video of this thread. Where specifically is there something wrong with the video?

(P.S. - notice that the modernist liturgical movement all came from France and Frenchmen. Beware of French priests. Today less than 4% of French go to mass, they are not anyone to emulate. If it was not for the American faithful that built all the trad mass chapels, there would be scarcely any trads in the world today. )

My responses are not directed toward the video per se, but to the notion explicit in Miserimini’s response to the OP, that prior to the modernist liturgical movement’s hijacking  of that movement in the 1910’s, there was something defective in the worship of Catholics which needed to be corrected.

It is not debatable, since the original docuмent from Pius X was written by him in Italian, and the call for active participation appears nowhere.