In in a general way, yes. But specifically, vaguely. To say the saints were dim-witted if they didn't see the misunderstandings in semantics wouldn't be a nice thing to say. Historically, there was a political struggle between Alexandria and some of the other Orthodox cities over theological prominence. Alexandria was known to be an awesome contributor to theological thought within the ancient Christian world. Maybe this tension was one of several causes for the misunderstandings and for the Copts being falsely called, "monophysites"? Plus, the language barrier as well could've been a factor since certain theological terms meant different things in Greek and Coptic. Maybe now, it's a matter of semantics (since both churches have been communicating more now than in the past) since it seems we are saying "2+2=4" and they are saying "2x2=4". Now is the time that the Holy Spirit is guiding to a closer rapport between the 2 respective Churches.
Plus, why do some Eastern Orthodox don't buys the "semantic" idea? Please forgive my ignorance in this matter.