Shadowhunters puts a strong emphasis on diversity of race and sexuality, at times prioritizing representation over consistent character development or organic storytelling. Some characters appear crafted primarily to fill identity roles rather than based on narrative necessity or merit. This can make certain arcs feel forced or formulaic, as if checking boxes was prioritized above coherent or compelling character growth.

Traditional gender roles, religious elements, and family dynamics are frequently subverted or portrayed as outdated. Masculinity is often sidelined or depicted as problematic, while non-traditional relationships are constantly foregrounded. The show showcases numerous cultural reinterpretations, tweaking established lore to align more closely with modern ideologies, leaving little room for older or more traditional values.

Dissenting perspectives rarely get a fair shake, traditional viewpoints are marginal or outright villainized. Nearly every major character enthusiastically embraces contemporary ideas about identity and gender, and characters who push back are depicted as bigots or obstacles to progress, leaving little space for pluralism or sincere debate.