So, is it the statues of Mary inside Catholic churches that you believe cross the line into worship? Catholics have statues Joseph and various other Saints as well. I can’t see how statues of Mary would cross the line, since there are plenty of other statues dedicated to other important figures in Christianity.
Is it the Hail Mary, and the rosary? Well, Catholics have hundreds of prayers that are oriented toward many different important figures, included Archangels, Joseph, and every Saint. Mary just happens to be one of the most important of those figures, according to the belief in the immaculate conception. I don’t see how this crosses the line, either.
Every argument you use to say that the honoring of Mary crosses the line fails because Catholics do the same thing for Archangels, Saints, and other important Christian persons.
You won’t hear me defending prayers to any saints, angels, or other important Christian personages. Since all honor and veneration is due to God alone, any prayers in worship done to anyone but God are wrong.
It is one thing to respect and honor great Christians of the past, quite another to erect statues for the purposes of prayers to them...
I challenge you to read say the book of Acts or, any of the letters of Saints Paul or Peter, and ask yourself if worship full of statuary and prayers to anyone other than God, was any, ANY part at all, of how they worshiped in that first generation?