" ... the intention is to be sure that our prayers are not offensive to the Jewish people who are our ancestors in the faith. We can't possibly insult them in our liturgy."
Speaking of true ethnic Jews of Christ's time, St. Thomas responds:
Article 2. Whether Christ should have preached to the Jews without offending them?
... On the contrary, It was foretold (Isaiah 8:14) that Christ would be "for a stone of stumbling and for a rock of offense to the two houses of Israel."
I answer that, The salvation of the multitude is to be preferred to the peace of any individuals whatsoever. Consequently, when certain ones, by their perverseness, hinder the salvation of the multitude, the preacher and the teacher should not fear to offend those men, in order that he may insure the salvation of the multitude. Now the Scribes and Pharisees and the princes of the Jews were by their malice a considerable hindrance to the salvation of the people, both because they opposed themselves to Christ's doctrine, which was the only way to salvation, and because their evil ways corrupted the morals of the people. For which reason our Lord, undeterred by their taking offense, publicly taught the truth which they hated, and condemned their vices. Hence we read (Matthew 15:12,14) that when the disciples of our Lord said: "Dost Thou know that the Pharisees, when they heard this word, were scandalized?" He answered: "Let them alone: they are blind and leaders of the blind; and if the blind lead the blind, both fall into the pit."
... By publicly reproving the Scribes and Pharisees, Christ promoted rather than hindered the effect of His teaching. Because when the people came to know the vices of those men, they were less inclined to be prejudiced against Christ by hearing what was said of Him by the Scribes and Pharisees, who were ever withstanding His doctrine.
If the Gospel is not clear enough, St. Thomas Aquinas reveals with stunning clarity the falsehood that Cardinal George promotes. And if true ethnic Jews are not above reproach, as St. Thomas clarifies, what immunity from offense is due to those who say they are Jews and are not and do lie?