Other than exaggerated antiquity of the TLM, the article was good. I am happy to see our Latin brothers and sisters being able toe xperience what the Estern churches experience every Sunday.
Hopefully, this will not be just a fad.
But it is, kosta. Pope Pius V only standardized the Mass after the Council of Trent (hence the adjective Tridentine), he didn't create a new Mass out of whole cloth. Plus, he stated that any liturgies that were older than 200 years could remain. That accounts for different rites like the Sarum rite, the rite of Braga, the Ambrosian rite, etc.
Here is a very brief account of the history of the TLM from the Web site of St. Joseph's Church mentioned in this thread.
"The beginnings of the Roman Mass are found in the writings of St. Justin (150 A.D.) and St. Hippolytus (215 A.D.) By 250 A.D. the Mass was being said in Latin throughout most of the Roman world, and the Latin Canon as we know it was completed by 399 A.D. While the Mass has remained essentially the same from the days of the Apostles, it was codified in its present form by Pope Pius V in the sixteenth century."
I have pinged vlad because he can probably give better citations than I have.