Hence in my examples, I looked at whole bodies of work, not just one piece of content (Austen, Dickens, Tolkien...). Even the newer franchises, Star Wars is 3 movies and we have interviews with almost everyone who worked on it about intention and messaging, Attack on Titan is both an anime, manga, light novels and a movie, Kimi no Na Wa would be the only exception where it's just one piece of content in the director's arsenal, but the creator themselves said their intention with that specific work.
I think that, yes, what you choose to highlight or dismiss over your body of work does say a lot about your political opinions or ideals - especially when the gatekeepers are out of the picture as they are in the free-to-read direct sales to the customer model that Tapas basically is. There's no Hollywood producer complaining that women don't go see action movies so you can't have a female action star, nor a literary agent saying that "black people don't read" so there's no point having a black lead (yes, these are both actual arguments that have been made for both things). So without those gatekeepers, the only thing that is stopping people is their own personal decision making and that is largely going to be down to their own beliefs and ethos.
Manage to create things for twenty years and yet not have a single minority character? You might have some biases to check there.
Guess what type of characters are omitted in Ender's Game though lol. You might not see direct homophobia, but you're going to see a distinct lack of any queer people in line with Orson Scott Card's view that queer people should not be protected by law, or given the rights or freedoms of straight or cisgender people.
Also, Card does have a book with a 'gay' character in it, and of course, he shows it as a gay pedophile. So it might not be in Ender's Game, but his views are in his body of work.