The THIS He refers to is receiving Him in the Eucharist not the specific liturgical form. Otherwise we wouldn’t have such diversity as in the Byzantine rite, the Latin rite (both Novus Ordo and Tridentine) etc.
First of all, you are reading the text wrong. The THIS to which Jesus refers is, in fact, the Holy Sacrifice of the Mass. It is also a misconception that there is diversity in the Latin Rite. We only have two forms: the Ordinary Form (Novus Ordo) and the Extraordinary Form (Traditional Latin Mass). And, the only diversity that is allowed is in the flexibility to choose the readings and the propers from the approved texts, as well as correct and proper liturgical music.
What you have written in your previous posts is very serious and, unfortunately, not correct. Words, rubrics and form are extremely important. When the Eucharistic Prayer is improperly recited (when the proper form and words are not used) and when the matter is not used (proper eucharistic bread and wine), that renders the Eucharist invalid. Then, what you are receiving is not the Body, Blood, Soul and Divinity of Jesus Christ. You are merely consuming bread and wine.
The form and prayers for the rest of the Holy Sacrifice of the Mass are just as important. As Jesus told the woman of Samaria, “we worship what we understand.” That certainly holds true for the Church. If form, matter, words and rubrics are not important, why would the Lord have spent significant chunks of the Pentatuch telling and spelling out to Moses just how He wanted things done. Jesus didn’t come to abolish this form of worship. He came to fulfill it and bring it to its full plentitude, and this is done within the Holy Sacrifice of the Mass.
So, we do need to have some understanding of our worship as Catholics.
In the spirit of fraternal and charitable correction, I urge you to read Pope Benedict’s book, The Spirit of the Liturgy. It would certainly help deepen your appreciation of the sacred treasure that Jesus left His bride, the Church. She is the keeper of this Sacred Mystery.