Makes you wonder what words John the Baptist used when he baptized Jesus?
Catholics have a lot of "Detail" that is hard to understand why it is important.

One of the issues we have with ancient writings (not just religious works) is translating them.
Take The Lord's Prayer for example. Some are taught "forgive us our debts, as we forgive our debtors." Some are taught, "forgive us our sins, as we forgive those who sin against us." Still others are taught, "forgive us our trespasses, as we forgive those who trespass against us."
The differences arise out of the translations into other languages as well as the number of passages used to create an aggregate "agreement" among the words used.
So, Greek might use one word, while Hebrew something else. Both translations may be accurate in context of their languages, yet between the two, one given word in Greek might translate differently from Hebrew.
In order to resolve questions over words, meanings and inferences, the Catholic Church likes to be the final authority. Whatever they say goes. So, in a baptismal rite, the words are governed by the church. If you deviate, you are not performing the rite as prescribed, and as such, risk the rite itself not being properly performed.
Other branches of Christianity look at rites and rituals a little more leniently. But for the Catholic Church, there seems to be little tolerance for ad libbing.
I remember when the New Living Testament (NLT) Bible was printed, there was a big controversy among certain churches. While the intent was to translate the King James version into more current, accepted language for modern times -- thus making it easier to read and understand -- there were opponents who felt that was somehow wrong.
"That which we call a rose
By any other name would smell as sweet;"
versus
"A rose by any other name would still smell sweet."
Paraphrasing that line from
Romeo and Juliet doesn't change its meaning. Yet, there are strict textualists who believe you need to learn the original text, or something important is lost in the translation.