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You have read nothing.  Your entire reason is subjected to a perverse will.

I don't have more time but I remember obvious errors. Listen to Fr. de Pauw.

This new rite alone is to be used unless approval of the practice of saying Mass differently was given at the very time of the institution and confirmation of the church by Apostolic See at least 200 years ago, or unless there has prevailed a custom of a similar kind which has been continuously followed for a period of not less than 200 years, in which most cases We in no wise rescind their above-mentioned prerogative or custom.

Pope Pius V promulgated the Tridentine Liturgy in 1570. It was used in the Latin West until 1962. The Pope himself calls it a "new" rite in Quo Primum bull, even though the intention was restoring the Roman Missal "to the original form and rite of the holy Fathers". The fact that there exists a pre-Tridentine Mass before the Tridentine Mass is evidence that changes, modifications, and revisions of the original Mass in Aramaic and Greek, indeed occurred. You can blind yourself to historical realities; but when you deny reality, it automatically works against you.

Quo Primum, 4:
Did the Pope make a complete liturgical innovation out of thin air? of course not. Undeniably, the substance of the Eucharist cannot ever be changed because Christ Himself instituted the Sacrament. That part alone is what is unchangeable until the end of time and what you can call "immemorial" because it is of Divine origin.