I believe the bread and cup are "sacred" if the meaning of "sacred" is "holy".
As for your quotes, I reject them as false teachings.
At what point does the wafer that is manufactured somewhere actually become the flesh of Christ? When it comes off the assembly line? When the priest blesses it? When it enters the mouth?
If the cup is actually the blood of Christ and the bread is actually the flesh of Christ, how do you harmonize eating them in light of the fact that believers are not to drink blood or partake in cannibalism?
How the Satanic Black Mass Proves the Truth of Catholicism
OR
HOW GADAR'S MOCKERY PARALLELS THE SATANIC BLACK MASS
OR
HOW GADAR'S MOCKERY PARALLELS THE SATANIC BLACK MASS