Comparing Nia DaCosta’s Hedda, where she adapts the Ibsen story to a different medium and makes significant changes to the story, to Maybe Happy Ending, where literally all that changed was the race of an actor is kind of ridiculous.
Also, I get DaCosta declined to talk to Jesse Green for the story, but I was at a Q&A where she was very directly talking about race. Green is factually wrong that race is never directly addressed in Hedda. There's a point where Hedda's ex girlfriend (another change to the story), lists Hedda's husband being "white and thoroughly middle class" as reasons he and Hedda are incompatible. Later, Hedda explains she couldn't be a professor because there are only two female professors at the local school and they're both white.
DaCosta’s understanding of why Hedda's is so desperate and resentful centers on her being a Black woman in the 1950s and it is in the script.