It depends on the nature of the stories. If the stories are positive and the kids are just sharing cute or inspiring tales about their siblings in a harmless way, it might not be unethical. However, if the stories are private or embarrassing and the kids are selling them without permission, it's not okay.
Well, first of all, it could lead to a breakdown in family relationships. The siblings may feel violated and trust within the family could be damaged. Socially, the kids might face criticism from others for trying to make money off family stories. Also, if the stories are sold to the wrong people or misused, there could be negative impacts on the family's reputation. And legally, if the stories are private and sold without proper authorization, there could be privacy - related lawsuits.
You could face legal action. Authorities may prosecute you for violating obscenity laws. It could also lead to social ostracism as many people find such content inappropriate.
I'm not entirely sure specifically about these 15 sibling stories on PBS Kids. But generally, PBS Kids often has stories that teach valuable lessons about family, friendship, and growing up. Sibling stories might focus on how siblings interact, support each other, and learn from one another.
It can inspire adults by reminding them of the simplicity of pure effort. Adults often overcomplicate things, but seeing kids give their all can make them realize that sometimes just putting in the effort is enough.