> And yeah the fact that the article-writer hasn't internalized this sound change yet

I don’t understand where this misunderstanding about my article comes from. I am saying that the sound at the intersection of “s” column and “i” row is “shi”. My article uses romaji so this is self-consistent. I am also mentioning that there is an alternative system that would romanize it as “si” but that’s not the one I’m using in my article.