Because we don't live in a culture that mandates you hide your fork and plate when they aren't being used to eat with. Imagine a culture where forks are taboo

Because we don't live in a culture that mandates you hide your fork and plate when they aren't being used to eat with. Imagine a culture where forks are taboo and often times illegal to be shown in public, except when you eat and where most people don't use forks. Where giving a child a picture of a fork (that isn't being used to eat with) is a significant social social breach that will get you hated and labeled for years and perhaps even a crime. Use of a fork in public in such a situation would get weird looks. In fact, even imagining such a society seems absurd, but that is how our current culture is (at least where I've lived at).