He didn't say he wouldn't have sex with her. He might enjoy them if they dangled in front of him because they are tits and most men like most tits. But it doesn't mean he can't have a preference for a different size/shape.
Just like some men say they prefer a big ass, but if they had a normal sized ass in front of them, it doesn't mean they'd be like "urgh no".
edit: And yeah picky isn't good. But preferring different things is fine!