Why bother about side effects that are unavoidable but statistically insignificant? You can say it about any type of cryme that you can be wrongfully accused of it. So what do you suggest, gust stop punishing any crimes because of it and go back to chaos? These cases are just not a valid argument. Sexism should be punished and should be stopped, side effects shouldn't stay in the way of measures against it. Our whole legal system works like that, why is it suddenly a problem exclusively when it comes to dealing with sexism.