I don’t know who the “they” are, but as a lifelong Lutheran and recently continuing Anglican, I’ve never heard the consecrated body and blood of Christ spoken of as bread and in any way different than a Catholic mightThey cannot give what they do not have so they justly call it bread and wine. Or, for some reason grape juice.
All of my life, when I have received the sacrament, I have received the true and substantial body and blood of Christ, Catholic protestations to the contrary notwithstanding.
Now, as a Catholic, you are right to statesnd believe we do not have a valid sacrament. We simply disagree