It also doesn’t do them any good to propagate the teaching of this “pacifist religion” to non-Jews too (like Roman citizens). Great way to make your empire full of “weaklings.”
Furthermore, it doesn’t do them any favors creating a heretic group and throwing the region into turmoil. Finally, Rome does not benefit if they create accounts against themselves in regards to mass child homicide (Matthew 2:16) and execution of a innocent man (Matthew 27).
This is aluminium tin foil hat level conspiracy.