The A.V. Club nails it:
Issuing a plea to set prejudices aside and adopt a more open-minded, progressive approach to accepting things solely on their inherent worth, Orson Scott Card has asked that people stop persecuting the upcoming Ender’s Game [film adaptation] simply because he is a homophobe.
Idiots can say whatever they want–it’s a free country. Fortunately, we’re also perfectly within our rights when we ridicule hateful idiots.