(The modern field of) iconology is talking about icons, not painting them. It is a way of deconstructing icons and reducing them to words. In the hands of iconologists, an icon is a semiotic puzzle to be taken apart, reduced to figures, colors, and props. Each component is a symbol, a stand-in for a word, and the icon can be translated into its textual meaning.
Iconology does serve a useful purpose – it is a way of introducing icons to the visually blind. It shows modern people who are not accustomed to meaningful images that there is in fact, meaning in images. Ultimately, it provides an academic framework for studying icons in a way that can be reduced to essay questions on an exam – an absolute requirement in modern universities.
It is not surprising then, that seminaries find the idea of ‘reading and writing’ icons appealing. In fact, probably most Americans find it attractive. It particularly appeals to converts from Protestantism. After all, Protestantism has always been rife with a text bias mixed with iconoclasm; if you say it’s written and not painted, then it’s not quite so much like the Catholic paintings that you always feared as a protestant. Of course, some people are attracted to Orthodoxy for more exotic reasons – the mysticism of Eastern religion, for instance. The term will appeal to them as well, because it implies gnostic secrets locked into the icons – an ancient language accessible only to the initiated.