Mask Girl centers on identity and societal beauty standards, sometimes prioritizing heavy-handed social messaging over natural character growth. Casting and character direction occasionally feel driven by a checklist approach, with identity factors foregrounded in key storylines. This can detract from nuanced storytelling and character depth, leaving some moments feeling more like commentary than narrative.

The show takes pointed jabs at themes like traditional beauty, family honor, and societal conformity, often positioning characters who reject or undermine these values as admirable. Masculinity is generally painted in a poor light, and traditional norms are reinterpreted to fit a more modern, critical lens.

While there are fleeting hints at diverse viewpoints, the show largely avoids sincere exploration of alternative perspectives. Individuals who challenge the prevailing narrative are depicted as villains or social outcasts, limiting robust internal debate and reinforcing a narrow ideological outlook.