The Valentine's Day "Love Is Love" dance serves as a focal event, while Alex and Charlie's relationship is foregrounded with Charlie coming out as bisexual to his father and the group. Justin Foley, portrayed as bisexual and played by openly gay actor Brandon Flynn, receives a terminal HIV/AIDS diagnosis tied to his past sex work and addiction, drawing sharp criticism for irresponsible messaging.

Winston's transfer as a gay character seeking answers further centers these arcs as central plot drivers rather than incidental details. The season also introduces an overt police brutality and systemic oppression subplot featuring student-led protests, a school lockdown, and a walkout/riot against SROs framed as resistance to over-policing of students of color. Jessica's unrelenting social justice activism and her group anchor much of the narrative, with new characters like Estela de la Cruz (Monty's Latina sister) and Diego Torres (Dominican) integrated into identity-tied conflicts and the murder cover-up. These elements function as intrusive messaging that prioritizes ideological positioning over entertainment coherence, compromising the series' focus on its core mystery and character arcs.