That responsibility is optional and it's fine for people to decline. It is also fine for someone like the author of this blog to highlight the topic so that some people may make choices to accurately depict pigs.
It Is entirely unnecessary to bring morality into it.
The thing about morality is that the details can differ from person to person, including what should or should not be covered by morality. Nothing wrong with advocating for your beliefs, especially if it comes with an argument about the impact on others.
It Is entirely unnecessary to bring morality into it.