In that case, the Protestant Reformation may be One Big Misunderstanding, because Protestants do believe in “glory to God alone”, which excludes the veneration of the saints, including Mary. Martin Luther, though, was raised Catholic and had been a Catholic monk, presumably venerating Mary. So, he and his Lutheran followers had a special regard for Mary, but he still rejected the Hail Mary and replaced it with his own rosary. The Lutheran rosary is very similar to the Catholic version, but minus the Hail Marys.
Anyway, you are telling me that the veneration of Mary is really a recognition of Mary, mother of Jesus, as a mother of God and as a faithful disciple of God. Since Mary fills an unique space as both mother and disciple, she deserves greater veneration than the other saints. Other saints, including the apostles, may have been faithful disciples and holy people, but they are not related by blood very closely to Jesus.