Symbolic of His scourging and death and resurrection.
Eating and drinking proclaims the Lord's death until He comes; it proclaims His death and second coming.
1 Corinthians 11:26 For as often as you eat this bread and drink the cup, you proclaim the Lord's death until he comes.
Paul didn't say participate in it, or reenact it, but rather proclaim it.
St. Paul says that they who eat this bread [the Eucharistic bread] and drink of this cup unworthily, shall be guilty of the Body and Blood of Our Lord. He tells us clearly: this is what it really is. Check out all the translations you want,1 Corinthians 11:27 (Multiple Versions), the truth of it is unavoidable.
Yes of course, we proclaim Him: by eating His Body and drinking His Blood, we proclaim His death and resurrection until He comes again.
Those who do not discern the Lord's Body --- that this is really His Flesh --- eat and drink unworthily; they eat and drink condemnation on themselves. 1 Corinthians 11:29 (Multiple versions.)
It is what it is.