no one would target me specifically for being a man

I think you’ve misunderstood. The commenter is not saying won’t jump you for no reason regardless of gender, that’s obviously true. But they won’t target you specifically because you are male, which is an additional source of violence that women have to deal with. I’d argue it’s even more common than women being targeted randomly - or even that random muggings/assaults are actually random. I mean, who’s jumping people that they think are a threat?