Because they're apparently sexist idiots like you who don't think men and women should be treated equally? They somehow got the notion stuck in their heads that

Because they're apparently sexist idiots like you who don't think men and women should be treated equally? They somehow got the notion stuck in their heads that men just can't be in the victim role when in reality it's not that rare for men to be in that position (Hint: It doesn't get reported because of the exact stigma mentioned above).