Earlier quoted context omitted.
Wow, way to go. Whilst he may have some beliefs that aren't very popular or even nice, does that mean that what's in the article is bad or wrong? Perhaps you should focus on his arguments, and not on the man himself. For once, this really is an ad hominem attack!
I would make an ad hominem attack, yes. I don't believe ad hominem is fallacious in this sense. Orson Scott Card has expressed such a lack of humanity elswhere that I do not understand why I would spend my time deciding whether his other arguments have any merit. He has disqualified himself from my consideration.
Having said that, I just want to make it clear that I don't know enough about him to agree with your position on him. I know he's anti-gay, and I've read the Ender books. That's about it.