If a woman shows me her kibbles and bits and we aren't in a relationship than that probably means she shows them to anyone and no one wants to date a whore.
That isn't fear, that is disgust.
Discussion
masterful sidestep
That was hyperbole.
He means women can send men signals they like them and want to pursue a relationship and the men are too timid or oblivious to follow through.
Women could also stop being subtle about it, but women fear rejection more than men so having a level of plausible deniability is almost mandatory for them.