Since the IC is -- Catholic dogma insists -- a prior application of the foreseen merits of the crucified Christ, what we are really glorifying is Christ's salvific work perfectly exemplified in his mother.
You think it's Satanic to praise and celebrate the salvific work of Christ?
Catholic doctrine can be debated, but I have no idea why any Protestant would want to debate this one. You think God can't make a sinless Jewish girl? Does his omnipotence have limits, then?
The scriptures say that ALL have sinned, except Christ who was without sin. Why send a savior if sinners (Mary's parents) can have sinless offspring? Sin is passed down through the male seed, not the woman's seed. For Jesus to be born without sin didn't require a sinless mother.