Historiography is a diverse field with various primary and secondary sources and the fact that we have, maybe, analysed different books or reasearch paper might be the origin of our disagreement. Obviously, I'm not stating that you will never find these information in a book, and as mentioned in other comments, there are some statements that have been drawn from common historiography. Nonetheless, most of the details in my article come after in-depth analysis and this is why actions such as leaving the Spartan children's stomachs empty, come after extensive research and they are absent in a great number of sources .