Christ is not a "door," even though He refers to Himself as such.
It really doesn't take all that much discernment to deny the cannibalism that Rome foists off on its indiscriminate members. We "feed" on Christ because He provides our spiritual nourishment and everything else we need, for that matter. In this case, calories really don't count.
Regarding the "whore of Babylon," if it walks like a whore of Babylon and it talks like a whore of Babylon, it would be wise to clean up its act.
claptrap is from the pit of hell.