I'm not sure the hypothesis stands up to scrutiny (apart from being based solely off of conjecture, that is). In the article, they link to the MOMA exhibit captioned "Yuny and his wife" [0], which depicts a male with a smashed-off nose seated next to, presumably, his wife with her nose very much intact. If robbers smashed the noses off of statues so their likenesses would not live in the afterlife to seek revenge, wh…
I don't know that I believe the article either mind you.