Following your logic the whole story revolves around Troy because if he hadn't had problems with the MC he would never have left the room he had at the beginning
No you don't seem to understand.
Maya's plotline to get free tuition exists only because of Quinn. Without Quinn, Maya's plot would be different.
Josy sadly is Maya, she has no plot of her own.
Sage needs to fix the HOTs because Quinn turned it into a whore house. Sure her plot dealing with Chad still exists, but that's minor going forward.
Jill us being blackmailed by Tybalt because Quinn needed more money and she set up the prep party through Sage which MC crashed. Without Quinn, there would be no party, therefore no blackmail plot, and no Tybalt dates.
You can thank Quinn for those delicious Tybalt dates, Jill fans
And Bella like Josy is just a Robin to Batman Jill.
Troy is irrelevant, even without a fight between them, Derek still would have got the MC to pledge the DIKs.