Is this actually true? I don't believe it.

That's not been my experience. I'm no more a stray dog than anyone else, male or female. We all have a shot at creating a sense of belonging. As for nobody coming to help, it's true that people will more naturally come to the aid of a woman than a man but it's not true that nobody helps men. I've seen many examples where men have helped other men that they didn't even know. Kindness is everywhere, you just don't always see it until you need it.