Indeed, that's how I read it. The paper started with an assumption that females are equal to males in producing scientifically correct papers, and therefore any discrepancy between male and female publication acceptance rates must come from discrimination. The reviewer pointed out that if you take an alternative hypothesis, that males are better at this stuff than females, then the conclusion didn't hold. They were begging the question. He went even so far as to explain that if you would take sports as an example, you could provide an absurd conclusion -- females are discriminated against participating in the 100 meters dash. Note, he was not saying that males are better than females at doing science, simply that this is not a foregone conclusion. And that's absolutely politically incorrect. All in all, I think he was pretty stupid to formulate it the way he did, but I don't think this is a slam-dunk to show suppression of females. Quite the opposite.