The idea about "writers, redactors, and interpolators in Rome" is simply a red herring thrown up by those who insist on treating eastern-Mediterranean Jews as anti-Semites because they report negatively on their persecutors.
Yup. Whoop de do you've read the gospels in Greek. Doesn't matter what language. If you want to assume groups such as the Pharisees were raving lunatics, kniving conspirators involved in a plot to kill their own people that's your problem.
The idea about "writers, redactors, and interpolators in Rome" is simply a red herring thrown up by those who insist on treating eastern-Mediterranean Jews as anti-Semites because they report negatively on their persecutors.
You got it. All except for the red herring part.