Marginal levels of immature and/or antisocial elements don't mean that society is sexist, no matter how vocal those trolls may be.
"The standard you walk past, is the standard you accept" - Lt. Gen. David Morrison
What change in society would count as not tolerating these trolls?
Actually that just means society tolerates trolls. You're showing your bias by jumping to the conclusion that everything is sexism or that somehow antisocial and immature people only target women.
Furthermore, western society actually holds in high regard concepts such as frer speech, which covers idiots being able to say idiotic things.