Comment by anovikov

Since i don't think that anyone at all seriously believes in God or any sort of supranatural forces, "being Christian" means "belonging to an in-group". In the narrowest sense, as far as the civilised/free world is concerned, "in-group" is "mainline Protestant + Jews". In a wider meaning it adds Catholics and somewhat-more-exotic Protestants typical to the US. Adding anyone else like Eastern Orthodox, formerly-Orthodox ethnic Soviets, is already a stretch. Non-Chalcedonic Church that was out of communion for 1600 years? Big stretch.