Short answer

Low angst = relationship conflict stays gentle; no cruel betrayal arcs.
Cozy = low angst plus warmth, domesticity, and often closed-door norms.

All cozy MM is usually low angst. Not all low angst is cozy. A low-angst thriller romance may still feel cold, stylish, or emotionally distant even if nobody cheats or ghost each other for two hundred pages.

If you only remember one line: low angst is about pain level; cozy is about emotional climate.

Why this subgenre clicks

Queer readers often want two promises at once:

1. Justice resolved in one sitting (closed-case mystery)
2. Belonging in a town that feels survivable (small-town fantasy)

Cozy mystery delivers both without the grim violence of thriller or the spice-first contract of chart MM romance. The emotional payoff is not “survived the worst night of your life.” It is “the town still has a place for you after the case closes.”

The pattern

Amazon Gay Romance charts still lean open-door—high-spice KU hockey, dark college arcs, and explicit slow burns that are slow only until they are not. Yet parallel demand keeps growing for closed door, fade-to-black, and graphic-novel PG comfort (Check, Please!, Heartstopper).

That split is not a contradiction. It is segmentation: same identity label (MM romance), different heat contract.

Readers are not abandoning steam. They are building a second shelf for books that deliver romance without making explicit sex the product.