>>17860263 (OP)Being (intellectually) primitive. The West has undergone many changes that an Orthodox would argue are rational but profane, such as categorizing theology as a sub-field of philosophy. Another such change was in art, where the West has over-emphasized one key technical element: perspective.
Artwork was no longer about showing meaning and revealing hidden reality, but about a canvas being a 2D obstacle between a static viewer and material reality that's optically projected onto it. Instead of contemplating the symbols that an event utilizes, you got to admire technical proficiency with which the symbols were drawn. It's a massive step backwards from Truth-as-revealing towards Truth-as-technical-correctness. Like most novelties, it is seen as "progress" and it was sort of implied that the Egyptians, Greeks and others (who built very sophisticated buildings with their geometric knowledge) simply didn't have a solid enough grasp on geometry to show a scene as a static projection... this premise still goes mostly unchallenged today so Orthodox art seems refreshing because it breaks from this dogma.