According to the fundamentalists...YES.
After all, we take the words in scripture literally.
What is the blood covenant all about at the Last supper ?...without this , the Last Supper is just a bon voyage party with no more meaning in any of the scripture in that area.
Just because YOU, like the apostles, can’t “understand’ the mystery of wine to blood and bread to body and God making a covenant and dying and rising and being Alive among us.....well, join the crew..We take these things on FAITH!
When does it change then? I don’t recall eating any raw flesh. It was always a wafer.
And forget drinking the cup. It didn’t happen in my day. Communion was the bread only. Maybe that’s changed some in the last few years, but for centuries the Catholic church never allowed its adherents to celebrate communion completely. it was only part of the communion, the bread part.