marian worship is the remnant of pre-indoeuropean matriarchal goddess worship. many europeans especially in the south have low aryan admixture resulting in societies that are very similar to pre-ie large agrarian societies. that's why marianism never took hold in the north, higher aryan admixture ensures that they're closer to indoeuropean sky-farher patriarchal worship. this has one downside though - it makes them susceptible to jew lies as they trust the bible too much.
Italy