Except inasmuch as they claim that Mary was sinless. Only Christ was sinless.
Mary was a sinner, just like you and I and every other human being who has ever lived on this earth, excepting only the Son of God.
There are no other exceptions, including Mary.
To claim that Mary was not deified is to tacitly accept the fact that she, too, was a sinner, just like all the other Saints.
Why Catholics find it necessary to cling to such an obvious fallacy as the sinlessness of Mary is beyond me. Nothing said regarding Mary in the New Testament supports the outlandish notion that she was somehow a second example of a sinless human being. That characteristic adheres solely to Christ, and there is absolutely no basis for extending the concept beyond Him.
Indeed, the sinlessness of Mary is a man made addition to scripture, and as such, it is a false teaching.
It's unfortunate that the Catholic Church has so heavily conditioned its membership into believing such a clearly man-made doctrine.
IMHO, it is an example of the intrusion of Goddess mythology into Christendom...
Are you trying to second-guess God? God, at the very beginning of the world picked Mary as the Mother o Christ. Through him she was spared from original sin so that she could be a holy abode for the infant, Jesus, growing within her.
Prayers that you will someday understand.
Nimrod & wife Semiramis (Nimrod built Tower of Babel and started the spread of false religions of ancient world. The god & goddess of these false religions were called various names as they spread from ome empire to the next)
Egypt: Osiris & Isis
Assyria: Assur & Ishtar
Babylon: Bel & Belit
Persia: Mithra & Anahita
Greece: Helios & Artemis
Rome: Apollo & Diana (See: Acts 19:35)
Bible: Moloch & Ashteroth, queen of heaven; in Acts 7:43 are called Moloch and Rephan
John the Baptist did have original sin, for he was born of Zechariah and Elizabeth, who were Israelites and descendants of Adam and Eve, but no personal sins whatsoever. John the Baptist never committed the least personal sin in his entire life, not even a single, semi-deliberate venial sin. John the Baptist never committed even the least of sins in his heart, mind, words, or actions.