It's not homophobic to not be attracted to effeminate guys.
No, it's not. But I'm pretty sure the member you quoted is referring to the self hating gays in here who think portraying themselves as masculine will make them "normal", but in reality, society will remain to see them like they see the others; queer.
Edit: Being a masculine gay/bi individual preferring other masculine guys doesn't make you homophobic. It's like saying a man who prefers white women over black women makes him a racist. Like gender, degree of feminity is a characteristic.