My two cents on two of the debates here: The MC doesn't mention the prostitution ring to Sage because if
a, he is not ordering from the restaurant - he is not interested in these things and will not interfere with it, also he will then never figure out the size of this ring and which girls are involved, so why would he mention this to Sage?
b, he is a costumer of the restaurant, which means he is enjoying the situation, why would he talk about it to Sage, who clearly has no idea, talking about this to her could mean the end of fucking HOTs for money.
I just replayed from the beginning and in the preps party Sage talks a lot about Burke of course without naming him. "my father is downstairs and i'm avoiding him" etc. Since she wants to avoid contact with her parents she herself doesn't mention this to MC and also why could this not be an information that noone would share with him? Burke is not teaching MC-s class, Sage is not anywhere near in school to MC and all the other freshies. This info could very well have stayed private, also if other students also understand that Sage doesn't like this relationship. I don't see this AT ALL a writing error.