I just don't get why anyone is so up in arms about Caitlyn Jenner. Why are these men so threatened? Does she affect them or their lives at ALL?

It's one thing if they have a trans person in their family and struggling with accepting them as the opposite gender than they are used to. That would be difficult for anyone just because of the dissonance of it. But to get all freaked out, angry, or nasty about a public figure they don't even know other than through the media? I just totally don't get it at all.