That's fair, but I get the feeling that the researchers came up with their conclusion before performing their study, and then interpreted their findings to fit that pre-supposed conclusion. The only thing this study can fairly claim is that some homophobic men may harbor homosexual desires. They've failed to demonstrate any causal linkage between those two attributes, but they're heavily suggesting one exists. Maybe their abstract grossly oversimplifies things, but it seems to extrapolate their findings far beyond any reasonable conclusion in my opinion, and that makes me question their methods and motives more than I normally would. The publication date also raises flags, as the common pervasive sentiment about homosexuality was very different in 1996 than it is today. All of those things combined indicate to me that this study should be carefully considered with plenty of grains of salt at hand.

But to get back on topic a little bit - my original intent was to refute the notion that if someone has a problem with the methodology of a scientific study, then they must perform their own study and present evidence to support a contrary claim. The examples I listed are things it would be reasonable to expect a layman with solid critical thinking skills to point out as potential flaws in this particular study, potential areas to look further into, to confirm whether or not the study is scientifically sound.