Yes. The Roman dogma of the IC is not generally accepted in Orthodoxy.
Must be a bummer, like missing the great contributions of Thomas Aquinas to sacred theology.
I was thinking the other day about the Dubia submitted to Pope Francis, asking for clarifications that require only a yes or no answer. The first reading for the feast of the Immaculate Conception includes this:
“And the Lord God said to the serpent: Because thou hast done this thing, thou art cursed among all cattle, and beasts of the earth: upon thy breast shalt thou go, and earth shalt thou eat all the days of thy life. [15] I will put enmities between thee and the woman, and thy seed and her seed: she shall crush thy head, and thou shalt lie in wait for her heel. “ [Douay Rheims tranx]
To me, this puts it rather bluntly, you are either of “her seed” or of the devils seed. We know most directly that “her seed” refers to Jesus Christ, but in a secondary sense, Christians are also of “her seed”. While the Orthodox do honor and reverence the Blessed Mother, as do Catholics, many of the man-made christian sects think there is a third way, that of dissing Mary while still being disciples of Christ. I don’t think the passage from Genesis admits of a third way.