I think that you are assigning motives to YHWH which, while seemingly self-evident, are not necessarily true. In that is the inherent assumption that we are so much more intelligent and informed by way of comparison to our forefathers, and by way of that intelligence and information, we gain the hubris to change for ourselves what YHWH said was eternally defined.
It is the same old lie, right from the Garden: 'YHWH didn't REALLY say...'
I can't find in the Bible anywhere where Jesus "preformed the consecration" at the meal he shared with his followers just before he was crucified.
He broke the bread and said This is my body, take and eat.
Then with the cup, he said take and drink.
"It is the Spirit who gives life; the flesh profits nothing; the words that I have spoken to you are spirit and are life." (John 6:63).He did not say they were literal words; that is, He did not say that they were His actual body and blood.
I don't think our all powerful jealous God would like to have a belief system have a priest squish Him into a little wafer.
And then be worshiped as it it was Him, our Almighty God. Really!
Even Peter, made a ex post facto pope hundreds of years after he died, calls it bread AFTER the "last supper."
Jesus calls it the fruit of the vine.
He also calls Himself the the door, the bread of life, the Vine...I won't go into that further, but I wish I could believe in the literal Living Waters, I would love to see them gushing out of my belly!