Most people are not super well-informed about any time, place, or culture they're not a part of, and that's as true today as it ever was. So why don't they just say that in the disclaimer? Tell people something meaningful about what they're seeing. Explain the context, don't just be like "This is horrible and we're above it! But, umm, since you seem to like it, still totally pay us for it." Disney is a lazy, vulture-like company, and manages to add "tone deaf" whenever it tries to look enlightened.