Is Christianity idolatry and blasphemy?

If the Abrahamic God who specifically and explicitly forbade idolatry and blasphemy exists, wouldn't He be smiting them and their Post-Christian descendants?

Would He not also be smiting Jews who failed to teach gentiles the Noahide laws? http://radicalisedrabbi.blogspot.com/2020/02/noahide-ranking-of-other-four-world.html

And also Muslims for not obeying http://quran.com/18/4?

If WW3 breaks out - started by Christians again - God will effectively have rubbed the noses of disobedient Jews, Christians and Muslims in their own shit.