Not really. Ninja has no obligation what so ever to stream with women/men nor does he have an obligation to put them in the spotlight or elevate their streams in any way shape or form. Why should it fall on Ninja's shoulders to advertise other streamers on his own stream when he's built the whole thing himself? The example you gave is pointing towards sexual harassment in the workplace this isn't the same thing. Now if he had been previously streaming with women and now admitted he has stopped doing so because of potential twitch bullshit then that would be some serious shady behaviour. However we can't keep holding these popular streamers as some beacon of light, they grew with their communities and the communities grew with them. In a sense they are victims of their own success.