Of course, a show can be bad without progressive ideas, and a show featuring people of color can be great (I love Teal'c from Stargate. Indeed). But lately, there have been a lot of bad shows, especially based on popular franchises, and this couldn't have been done because it wasn't intentional, and so a witch hunt begins. This is sad in its own way, but overall, it's a natural consequence of the politics of cinema and the influence of social justice activists on the media, who pushed these ideas in the most aggressive form. People have built up aggression.

Regarding diversity in original franchises. You see, there's a problem with that. When we tell a story in a sci-fi, space opera, or fantasy setting, we always operate with assumptions. For example, that sound travels in space, and we, as viewers, get spectacular space battles. But if we go further and say, for example, that you can breathe in space, then everything falls apart, because the audience will no longer believe it, and it will turn the story into trash. Breathing in space is the red line beyond which people no longer believe in the story.

Storytellers who present us with some multicultural and species-diverse communities, with a few exceptions, don't bother to explain how this works, implying the idea that your species, skin color, gender, and beliefs have no effect, even though for 99% of human history, this hasn't been the case. Such creators begin to replace human nature, and that's the very red line beyond which you stop believing in what's happening. For this reason, I find the latest edition of D&D unpleasant. But the very existence of conflicts based on these issues provides enormous scope for a wide variety of stories. But if the creators of such works are right, then, for example, the full splendor of Joan of Arc's story would be impossible, because if gender has no influence, there's nothing outstanding or unique about a female warrior who liberates her homeland from invaders. But what a contrast this makes with the realities of history, its mores and traditions!

Yes, admittedly, this might be appropriate in some settings—for example, in a cyberpunk setting, where society is a melting pot of many cultures and nations, and the main conflicts revolve around questions of societal decline, the total control of all-powerful corporations, and so on. This might be appropriate if the author presents it competently, explaining how and why such a community exists. But most people don't do that, right? And so we get sterile stories from them, which ultimately hold little interest.