Where would they ever get the idea that Catholics make Mary a demigod, or even worship her.
One would have a hard time in Bible times explaining kneeling before a statue and praising the entity it represented in the unseen world, and as having Divine powers and glory, and making offerings and beseeching such for Heavenly help, directly accessed by mental prayer.
Moses, put down those rocks! I was only engaging in hyper dulia, not adoring her. Can't you tell the difference?
And making that distinction itself is presumptuous, as the Scriptures do not sanction religiously bowing down to any statue in supplication, nor supplies even one single prayer to anyone in Heaven but the Lord (crying "Abba, Father," Gal. 4:6; not "Mama, Mother"), nor in instructions on who to pray to ("our Father who art in Heaven," not "our Mother").
Note that many Catholic Marian attributions much parallel even that of Christ:
For in the the Catholic quest to almost deify Mary, it is taught by Catholics*,
as Christ was sinless, so Mary was;
as the Lord remained a virgin, so Mary;
as Christ was called the Son of God, indicating ontological oneness, so Mary is called the Mother of God (which easily infers the same, and is not the language of Scripture);
as the emphasis is upon Christ as the Creator through whom God (the Father) made all things, including Mary, so it is emphasized that uniquely to her, Jesus owes His Precious Blood, shed for the salvation of mankind, (the logic behind which can lead back to Eve);
as Catholics (adding error to error) believe Christ gave His actual flesh and blood to be eaten, so it is emphasized that Mary gave Him this, being fashioned out of Mary's pure blood and even being kneaded with the admixture of her virginal milk, so that she can say, "Come and eat my bread, drink the wine I have prepared" (Prov. 9:5);
as Scripture declares that Christ suffered for our sins, so Mary is said to have done so also;
as Christ saves us from the condemnation and death resulting from the fault of Adam, so it is taught that man was condemned through the fault of Eve, the root of death, but that we are saved through the merits of Mary; who was the source of life for everyone.
as the Lord was bodily ascended into Heaven, so Mary also was;
as Christ is given all power in heaven and in earth, so Mary is surpassing in power all the angels and saints in Heaven.
as Christ is the King of the saints and over all kings, (Rv. 15:3; 17:14; 19:16) so Mary is made Queen of Heaven and the greatest saint, and that Next to God, she deserves the highest praise;
as the Father made Christ Lord over all things, so Mary is enthroned (all other believers have to wait for their crowns) and exalted by the Lord as Queen over all things;
as Christ is the express image of God, and highly exalted above all under the Father, having the primary position among all creation, so Mary is declared to be the greatest saint of all, and the first of all creatures, and as having a certain affinity with the Father, with a pre-eminent resemblance which she bears to the Father;
as Christ ever liveth to make intercession for the saints, so is Mary said to do so;
as all things come from the Father through the Son, so Mary is made to be the dispenser of all grace;
as Christ is given all power on Heaven and on earth, Mary is said to have (showing some restraint) almost unlimited power;
as no man comes to the Father but through the Son, so it is taught that no one can come to the Son except through Mary in Heaven;
and as the Lord called souls to come to Him to be given life and salvation, so (in misappropriation of the words of Scripture) it is said of Mary, He that shall find me shall find life, and shall have salvation from the Lord; that through her are obtained every hope, every grace, and all salvation. For this is His will, that we obtain everything through Mary.
And as Christ is given many titles of honor, so Mary also is, except that she is honored by Catholics with more titles than they give to the Lord Himself!
The NT church knoew nothing of
an almost almighty demigoddess to whom "Jesus owes His Precious Blood" to,
whose [Mary] merits we are saved by,
who "had to suffer, as He did, all the consequences of sin,"
and was bodily assumed into Heaven, which is a fact (unsubstantiated in Scripture or even early Tradition) because the Roman church says it is, and "was elevated to a certain affinity with the Heavenly Father,"
and whose power now "is all but unlimited,"
for indeed she "seems to have the same power as God,"
"surpassing in power all the angels and saints in Heaven,"
so that "the Holy Spirit acts only by the Most Blessed Virgin, his Spouse."
and that sometimes salvation is quicker if we remember Mary's name then if we invoked the name of the Lord Jesus,"
for indeed saints have "but one advocate," and that is Mary, who "alone art truly loving and solicitous for our salvation,"
Moreover, "there is no grace which Mary cannot dispose of as her own, which is not given to her for this purpose,"
and who has "authority over the angels and the blessed in heaven,"
including "assigning to saints the thrones made vacant by the apostate angels,"
whom the good angels "unceasingly call out to," greeting her "countless times each day with 'Hail, Mary,' while prostrating themselves before her, begging her as a favour to honour them with one of her requests,"
and who (obviously) cannot "be honored to excess,"
and who is (obviously) the glory of Catholic people, whose "honor and dignity surpass the whole of creation." Sources and more.