As one commenter stated perfectly well, the problem with "man or bear" posts is that in subtext it introduces the hostility and division towards men.
It's not just women discussing their fears, it's women signaling "men are more dangerous than bears".
And this rightfully insults and angers many men, as it is a direct attack based on a wide immutable identity that omits any nuance.
Such posts do not promote any understanding of the situation, do not explore any root causes, and, from what I've gathered, comment threads are full of people telling men to shut up, either because "it's not about them" or because "women's safety are more important than men's feelings" (as if those posts promote women safety).