Rabbi Singer should have denounced Christianity for the blasphemy Christians themselves admit

4:00  Rabbi Singer only goes as far as to liken idolatry to spiritual adultery.

https://en.wikipedia.org/wiki/Sanhedrin_trial_of_Jesus

Mark 14:55–59 states that the chief priests had sought witness against Jesus to put him to death but did not find any, so they arranged false witnesses against him, but their witnesses did not agree together. Mark 14:61 states that the high priest then asked Jesus: "Art thou the Christ, the Son of the Blessed?" And Jesus said "I am", at which point the high priest tore his own robe in anger and accused Jesus of blasphemy. In Matthew 26:63, the high priest asks: "Tell us whether you are the Christ, the Son of God." Jesus responds "You have said it", prompting the High Priest to tear his own robe,[2][9][10] breaking Mosaic Law (Leviticus 21:10).

How many of the Ten Commandments have Christians broken? (They forbid idolatry and blasphemy.)

How many of the Seven Noahide laws have Christians broken? (They forbid idolatry and blasphemy.)

Even Christians cannot deny that the New Testament was written by mortal and fallible men. Christians do not claim that the New Testament was written by Christ, let alone God while Jews believe that the Torah was God's Word for Jews and Muslims believe that the Koran is God's Word for gentiles.

Could Christianity be a practical joke played on the credulous and intellectually dishonest?

After 2000 years of blasphemy and idolatry, when will the penny drop?

Did God send Jews and Muslims to the West to make Christians uncomfortable enough to examine the burned and bloody history of Christianity?

Surely the only people who have the right to call themselves Christians are those who have been confirmed?

Churches define the strength of Christianity with "bums on pews" rather than numbers of confirmed Christians because they are now so few that the Catholic Church no longer even releases these figures. 

Only around 6 million confirmed Anglicans in the UK

Christianity only managed to sustain itself through state intimidation because its doctrines are so absurd that only fear of execution and state persecution would stop people from questioning the Trinity. Once government lost the political will to do so, that was the beginning of the end of Christianity.

The fatal blow to Christianity was from the Americans when they separated the church from their state. Most of the Founding Fathers denied the Trinity, paving the way to Islam. After all, a righteous gentile who wishes to worship the Abrahamic God without being guilty of idolatry and blasphemy is closer to being Muslim than Christian. The Founding Fathers were really proto-Muslim.
https://www.mtsu.edu/first-amendment/article/724/church-of-the-holy-trinity-v-united-states

https://en.wikipedia.org/wiki/John_Adams#Religious_views
https://en.wikipedia.org/wiki/Benjamin_Franklin#Virtue,_religion,_and_personal_beliefs
https://en.wikipedia.org/wiki/Alexander_Hamilton#Religion
https://en.wikipedia.org/wiki/John_Jay#Religion
https://en.wikipedia.org/wiki/Religious_views_of_Thomas_Jefferson
https://en.wikipedia.org/wiki/Religious_views_of_George_Washington
https://en.wikipedia.org/wiki/American_Enlightenment

The other fatal blow to Christianity was the Doctrine of the Trinity Act 1813 administered during the reign of Queen Victoria.
https://en.wikipedia.org/wiki/Doctrine_of_the_Trinity_Act_1813