“But it’s not “fine” for the Body of Christ. He deserves much better.”
You could make the same case for ordinary matzah that He used.
The Holy Scriptures include not a single verse of how to implement communion - other than the form of the traditional Jewish Passover meal. The plastic cups were used to distribute the (non-matzah) wafers. No big deal.
If it offends some, perhaps they are focused on the wrong thing.
Well, one could if it was matzah that He broke, but alas, it was “artos” which is “challah”, leavened bread. And we know this by what came after Jesus said to Judah “what you do, do quickly” and some of the disciples were thinking,
John 13:28 But no one at the table knew for what reason He said this to him. 29 For some thought, because Judas had the money box, that Jesus had said to him, “Buy those things we need for the Feast,
The disciples were under no illusion that they were eating a Passover meal when the Passover lamb had yet to be slaughtered. Even the priests testify to this fact.
John 18:28 Then they led Jesus from Caiaphas to the Praetorium, and it was early morning. But they themselves did not go into the Praetorium, lest they should be defiled, but that they might eat the Passover.