Why do TV game shows and documentaries insist on pretending that film crews don’t exist?

Why do TV game shows and documentaries insist on pretending that film crews don’t exist?
The anti-porn campaigner Julie Bindel is making outrageous, untrue claims about the monstrousness of adult entertainment – and not for the first time.
More 1960s anti-smut hysteria from notorious fraudster Charles Keating.
The British government’s campaign of mass hysteria in order to keep the nation rabies-free.
The tunes considered too dangerous and subversive to be played on national radio during Desert Storm.
The propaganda war against sexually transmitted disease amongst soldiers.
The hellfire and damnation-fixated comic strips of the notorious Christian cartoonist.