It was unheard of in Judaism to eat flesh and drink human blood. It is nowhere to be found in Jewish religious tradition as acceptable sacrifice.
And Jesus being a Jew who obeyed the Law perfectly would not have done something the Law explicitly fobids! So, something is not kosher here, no pun intended.
Therefore, the idea is either spiritually symbolic or it is cultist cannibalism. It cannot be both. God offeirng himself as real food and real drink...so that by consuming him we are consumed by him. Good Lord!
Interesting that the same objection you write was also written in the Gospel of John Ch. 6, made by some of Christ’s followers, who left Him because of His statement; they thought it was cannibalism, and they were disgusted.
Is it irony, or have you adopted Protestant heresies on top of your own?