Nothing. It's just the parish where I was called to be Orthodox is Coptic. There was a time years ago I'd been convinced the Coptic tradition was purer orthodoxy. Now as far as I'm concerned there are parishes on both sides of the split that do better and worse jobs of manifesting the church, teaching well, engaging tabd serving the world around the parish. As far as I'm concerned, what matters is being part of a local community where you can be nourished, have community, serve, and be faithful to orthodoxy. It doesn't matter to me which side of the split that's on. I venerate st Severus, st dioscorus, st Timothy, but if the eo consider them to be in error, that to me is a disagreement over the historical fact of what they taught, not a disagreement about the faitg we agree on today.