Fair enough BlueJug
I think the issue is that the incidence of rape and the kinds of thoughts and behaviour that drive men to commit rape is a huge issue and something that women everywhere should be concerned about - it's a massive threat to our safety and well being.
False accusations of rape, on the other hand, are a very small problem, affecting only a small number of men.
And - crucially - men have the power to protect themselves from false allegations. They just need to not have sex with anyone who hasn't made it absolutely clear that they want to have sex.
Women, on the other hand, can do very little to stop themselves being victims of rape.
So raising the issue of false allegations gets shouted down because so many people are frustrated that women are expected to discuss it, be sympathetic, support actions to prevent it, when a) it's up to men to change their behaviour and b) it's such a tiny issue compared to the much bigger issues that women face.
Wouldn't you shout at someone who was fussing over a mosquito bite when you were both in danger of being eaten by a lion?