Polygon's review of Star Trek: Strange New Worlds season 4 concludes that the show continues to lean too heavily on high-concept "gimmick" episodes at the expense of developing its established characters, a flaw the reviewer says has persisted since season 3. Showrunners Akiva Goldsman and Henry Alonso Myers deliver several strong standalone instalments, but the review argues this comes at the cost of meaningful arcs for supporting cast members, undermining the series' original premise of blending episodic storytelling with serialised character growth.

Specific criticisms include "A Case of Chiaroscuro," a noir-styled black-and-white episode that the review says adds little to first officer Una Chin-Riley's character beyond what was already covered in a season 2 episode, and a stoner-comedy mashup that fails to develop helmsman Erica Ortegas and engineer Montgomery Scott beyond their job roles. Other characters, including Nyota Uhura and La'An Noonien-Singh, are also said to be sidelined or given weaker material than in previous seasons. The review is more positive about episodes such as "Off-Hour" and "The Griffin Incident," where the high-concept format is judged to work in service of genuine character development for figures including Christine Chapel, Joseph M'Benga and the Kirk brothers.