Misquoting Bart Simpson "If you never experience the abuse, you'll never get desensitized to it", and with that in mind, and talking here only about written abuse, these are my favorite three outcomes for, let's say, my daughter: 1) No one abuses her online 2) People abuse her, she dismisses it as noise 3) People abuse her, and she reacts and attempts to control it I think we should be aiming for number 2.
Why do you believe it's better for your daughter to receive abuse and dismiss it than not to receive it in the first place? If we're aiming for ideals, let's go for the ideal of a world in which people aren't subjected to so much abuse that they just filter it out as background noise, because that sounds like a shit future.
It can't be a great idea to aim for the "ideal" situation if it's impossible to do. So much wasted time. Surely it's a better idea to aim for something that one can control, and is obtainable, even if not easy.