"Crying Rape" is a real concern, but not statistically viable to keep situations like this from being reported. You can find reports such as the United Kingdom's Crown Persecution Service publication regarding wasted police time reporting false accusations that 35 out of 5,651 or .6% of women accused men of rape. It's very unfortunate that false accusations exist and that these men's lives are ruined, but with all legal systems we can't aspire to perfection, just a functionality as close to perfection as possible.
True there are documentaries that tell the stories of these men, but based on these statistics, for every documentary produced there can be 161 documentaries of a woman who has been raped. Once again, this occurrence is vulgar and sad, but not enough for me to turn my back on any crime regardless of what is known of the victim.