I hope Bad thoughts corrects me here if I'm wrong, but I think his point is the episode deals with a lot more besides the characters being black. The issues could be applied to any racial or cultural group that is systematically persecuted or denied rights of other citizens. Star Trek often presented its moral statements in ways that are obvious on the surface, but with deeper meanings.
It has potential to speak to many groups. Being a woman, Eaton shared at least some of the distrust that Benny had as a professional. On the other hand, their lives might differ in how they experience violence (if at all). A woman in the 1950s might not fear being beaten by the police, but how would she be treated by the police if she wanted to report that she was raped by an acquaintance, perhaps even her husband?
Where the episode does focus on a particularly African-American view is how it perceives the future. The whole thing about getting the story published was to assert that there was a hopeful future available to them. I hate to use the phrase, because it is very current, but the story was audacious because it offered hope. If a Jew and Jewish social movements were at the center of the story, it would necessarily focus on justice. Women, equality. Of course, all these movements share interest in equality, hope and justice, but those qualities are emphasized differently by each one. In other context, we might focused on autonomy or traditionalism. Unfortunately the script did not emphasize "hope" as much as it should. It's not something that Benny emphasized, but he responded to it from other people: Jimmy's lack of hope and the discussion about who might be having the dream.
ETA: For proper disclosure, I am Jewish with some Mexican heritage.
Finally, all forms of discrimination are comparable.
ETA2: I forgot that Herb Rossoff, who is at least coded to be a Jew, may be either a communist or socialist, suggesting a different way of looking at the future.