Yeah, that's probably DPC's intention, and it would be a good idea if it were well written. The problem is that Sage has been neglecting her sorority for at least two years, maybe more. Probably even before starting dating Chad... The problems of her sorority aren't coming from the past two months in the game... DPC made the problems of the HOTs too hardcore because he's a sucker for drama, and that forced him to make Sage too stupid, or blind and selfish, because she has to be really stupid or self-centered to not to notice all that is rotten into the HOTs. It´s so big that it only took a few days to Lily to figure out everything... So when we see that Sage is not stupid at all, and that she actually cares for the MC and other people, she seems to be a totally different person from the one she was just two months ago in the game. Bad character development.
The same goes for the HOTs that apparently aren't into Quinn's business. Elena, for example, seems to be an intelligent person. Didn't she really notice all that is happening into the HOTs? Prostitution, drugs... And you can say that maybe she knows something, but she thinks that it´s not her business so she doesn't say anything... But when the shit hits the fan, she's going to be there too...
At the end of the day, this is only a porn game, for sure. But I think that we all agree that it's at a different level from most of porn games, so I think that we can expect more from DPC´s writing than from other developers of porn games. If it were just a fap game with a silly story, I would not spend a second thinking in the characters, I would only look at the boobs.
I think you missed or didn't pay attention to Sage's character development. First I will talk about it, then the problems of HOTs. PinkCake presents Sage from the very beginning as a typical cheerleader with inflated self-esteem - a spoiled girl who hires MC to spy. This representation is false - a well-known plot device that hides the true identity of the character.
Hints that Sage is not the way the DPC introduced her to us occur throughout the story. They are easy to miss if you play inattentively, ignoring the dialogues:
Episode 2. Sage shows care for MC when he was beaten by Dave. She proves to be an active and versatile girl when she wants to learn how to play the guitar and shows interest in sparring. At this moment, we first see her as a friendly and positive girl.
Episode 4: Sage provides moral support to MC during Josy/Maya drama. I see this chemistry between them and I just forget about Trouple. It is so good and easy with her, positive and crazy energy just comes from this girl.
Episode 5. Here we see the high moral standards of Sage. She goes berserk when MC jokingly mentions his dead mother. She hates to feel like an insensitive idiot and gets mad at Tremolo for embarrassing her. And if you continue to joke, you get -1RP Sage.
In Episode 6, we see even more of what a sensitive and emotional person she is when she is mentally destroyed after Chad abandoned her. We also see for the first time that she is smart, pays due attention to her studies and can balance between fun and study.
Episode 7 fully reveals the character, his name is True Colors and this is a subtext, a message to the player that this chapter reveals the real personalities of the characters in all its glory. We see how Sage is a warm-hearted, highly moral and kind soul. Bella notices this in a conversation with Jill: "She is not like I imagined. She turned out to be a very smart and intelligent girl"
Of course she has personality traits. And here we come to the problems of HOTs. Sage is very emotional and impulsive, she has an explosive temper. She is also very loving. This situation with Chad has driven her crazy and she is no longer able to manage the HOTs, leaving all the work to Quinn. Love is blind and we see it in the Sage/Chad relationship. She's so in love with him that she doesn't see the obvious things her "mom" told her. This is seen in the prologue of Episode 5, the way Sage looks at Chad, who doesn't care. Why can't Sage see what Quinn is doing? Quinn is very good at hiding her shady business and I think she has been doing this for quite some time, most likely since the second semester of last year. Assuming Quinn is now in her second grade, which I think is true. And her high moral qualities do not allow her to doubt her friend.
From observations, it can be concluded that DPC planned this character development from the very beginning. Attentive players have of course missed this.