Some fujioshi gain more pleasure by finiding bl in series that aren't. By asserting this isn't bl while also making it so blatantly homoerotic, the author has made the ultimate BL. The author is a genius.
I don't know why y'all wanted it to be more graphic. The emotional impact was much stronger for me since it's her emotions being toyed with being the focal point than her body. If it was more graphic it'd seem like it was for shock value more than anything.