The problem is that questions like "Weren't you man enough to fight him off?" don't get asked, the threat of those questions prevent men from telling anyone.
And of course it's bullshit (the rest as well, but that one is just especially idiotic) to ask "What was she wearing?" (in general). But that's something that people are actively trying to better. Not for men.
You are continuing to ignore my central point. Men in our society are not indoctrinated in a culture of fear about rape the way women are. People do not routinely lecture men on things they should do to avoid getting raped. Most men walking by themselves at night do not worry about rape as one of the principal dangers to be wary of. Completely ignoring any question of how frequently rape happens to men, the mere existence of rape does not have anywhere near the impact on men's lives as it does on women's.
It is plausible to me that there is also a culture of shame affecting men who have been raped, along the lines that you have described. But if so, it is very silent compared to the rape culture surrounding women, and thus has far less impact on men who are not themselves victimized. It is no doubt no less awful for men who are the victims of rape, and I agree that any such culture must, must, must be fixed.
But at the same time, I can't blame the activists out there for targeting their primary effort at the side of the problem that has the broadest effect and the widest societal impact. And also, I optimistically believe that if we eventually do manage to fix the culture of shame and blame attached to rape that affects women, a lot of that progress will automatically carry over to the case of men who are raped, too. Feminism has never been just about making things better for women! That's just where the first big steps are naturally found.
And of course it's bullshit (the rest as well, but that one is just especially idiotic) to ask "What was she wearing?" (in general). But that's something that people are actively trying to better. Not for men.