If Christianity was a Roman religion meant to pacify the Jews, they certainly did a very poor job. The Gospel of Matthew was probably aimed at Greeks familiar with Mark; but Mark, Luke, and John were clearly aimed at Greeks, as were all of the epistles, and the vast majority of what would become the apocrypha. They essentially took Jewish culture, and translated it into a easy to digest form for the Platonic Greek audience.
As a result, the first strongholds of Christianity were in Western Anatolia and Greece, as well as Alexandria in Egypt. There is also tradition of Rome being an early stronghold. Israel was not. Christianity, in the the second century, quickly came to become the dominant tradition in Platonism.
Did the Roman government sponsor Christianity? If that were the case, it is fairly strange how there isn't any record of it from Roman Imperials. The earliest letters we have of any Roman officials discussing Christianity are letters from Pliny the Younger addressed to Emperor Trajan, and he doesn't seem to know what Christians are - just that they're some form of secritive cult who have a God named Christ, they met before dawn, and were suspected of disruptive, yet peaceful activity against the government.
The Messiah cults of the Jews usually sprung up when the Romans were being bastards. Hadrian, for example, decided to build a temple of Jupiter on the ruins of the Jewish Temple to God, and this caused a Jewish Messiah to arise and lead the Jews in a revolt. This ended up being the last major Messiah revolt because Hadrian committed genocide slaughtering hundreds of thousands and banishing the remaining Jews from Israel on pain of death. When the Romans wanted something, they used military brutality.
So this guy's opinion is not just far-fetched seeming, but it doesn't really make a lot of sense. The evidence just isn't there, but there is plenty of contrary evidence.
I describe myself as a little dose of toxic masculinity.
