I think this video is just highlighting on how uneducated our society is. People assume that you mean gay when you say hetero-sexual this way because almost no one will refer to their sexuality this way.
Being uneducated isn't the fucking problem.
I think it is. Back when Jay Leno was on, he had a "section" of his show called "jaywalking" asking people very basic questions and the vast majority of them got it wrong.
That's called being uninformed and ignorant, not uneducated.