I disagree. You can't compare something like a preference to racism.
1) I believe people are born straight, bi or gay and the same goes for sexual preferences/fetishes. The difference is, these sexual preferences/fetishes are unknown to the person until they see, or experience the preference/fetish and it does something to their mind and body that they can't ignore or change.
No one is born a racist, they're taught that way by ignorant parents, friends and media. A sizequeen is born a sizequeen but just doesn't know it until they experience "size" and it triggers something in them. Once that trigger is pulled they can't take it back even if they want to. A racist can always be taught better unless they're too stupid to see better. In that case, they were born stupid not racist.
2) It can be an anatomical thing, so once again something they were born with that they can't change. Men are born with all different shapes and sizes of penises so why would it be any different for women's vaginas? A larger penis is going to feel much more pleasurable for a woman with a larger vagina and in extreme cases if they can't feel a smaller penis then they can't get any pleasure out of it, no matter how badly they want to. If the key doesn't fit, then the lock isn't going to work. Nobody is meant to be unconditionally sexually compatible with everyone they meet.
Sizequeens have a preference, they don't go putting down people that don't have large penises, they don't treat them with disrespect, they don't attack them, and they don't teach their kids to hate them. They simply choose not to sleep with them and when it comes to sex, you can never be too choosy.
Ok there's my rant, I could keep going but I'll sit back and see what happens for now. lol