I’ve noticed an interesting conundrum with most of the Protestant denominations. They have rejected the ancient Church, and all of the doctrines and practices along with it. Then, without those roots, they in turn try to recapture “authentic” Christianity as would have been practiced by the first century Church. I spoke to this in another thread once where I noticed more than one congregation trying to recapture the practice of “annointing”. Of course, the Catholic Church has practiced sacramental annointing for 2000 years. Communion, or the Lord’s Supper, as they often term it, is another of these.
Since their doctrines and traditions can often interfere with documented ancient Christianity (which would be the Catholic/Orthodox practice and understanding), they will then either perform some serious intellectual gymnastics or reject the theology and doctrine upon which it is based to make their understandings “fit” and thereby “prove” that they are worshipping “exactly as New Testament Christians worshipped”.
So, in context of the Catholic understanding of the Euharist as it has been for 2000 years, they reject Apostolic succession and the priesthood, which negates any possibility of Real Presence anyway, so then it is not Eucharist but rather “the Lord’s Supper”. And even though Jesus would have most surely used wine, their tradition doesn’t allow alcohol, so then it not only has to be justified, but done so in such a way that it conforms with “ancient Christianity”, so therefore wine was really juice, or so weak that it was practically juice, or whatever.