This is really the same rubbish we heard for 40 years after Enoch Powell's infamous 1968 speech on mass third world immigration into the UK. He was accused of making it impossible to talk about immigration as even to touch on the subject became "racist".
But what was really happening was the hard left / cultural Marxist movement had taken over the territory of language and controlled the lines on which battle (debate) were drawn. This allowed them to say to their opponents, no matter how respectfully the subject was broached: "you are morally equivalent to Enoch Powell who we have already subjected to a chorus of execration. So shut up."
In 2014 a single internet troll responding to a co-ordinated worldwide media campaign is an ideal aunt sally to play old Enoch's role. If you disagree with the aims or the methods of feminism you have already been labelled a "misogynistic" "bully" and no reasoned argument will change that. They don't want a debate, they want you to shut up. These tactics are obviously no way to conduct an honest or reasoned campaign so stop worrying about it and let them scream themselves sick.