Toxicity from Male Player base towards Females

I've been playing Overwatch since release on PC, and my girlfriend has been playing since release on PS4, switching to PC about a year ago. People on console don't talk nearly as much as they do on PC, but when they do they are generally super friendly, or at least not immediately acting like a 12 year old on CODfor the first time when his parents aren't home. Mostly, my experience on PC has been the same. But that isn't the case for my girlfriend. In at least 50% of the games she plays, if she says anything in voice chat, she's immediately barraged with negative comments about her appearance, about her weight, abouther skill (she's a fantastic player, she carries 90% of her games and has been placed in Top 500), and all before a match even starts. The male player base of this game has such fragile ego's they can't stand being on a team with a female that is better than them, so they attack her for absolutely no reason. She's even been banned on an account because her entire team reported her for throwing, even though she had 5 gold medals and her team was screaming profanities the entire game. We could have, and probably should have reported many of the things these people say to the police, because some of it is absolutely psychotic.

I guess my question is, how do you think Blizzard should treat these cases of clear sexist behavior/harassment?
They clearly aren't doing much, if anything about it now. What systems would have to be put in place to ensure that Overwatch 2 doesn't turn into the same cesspool of toxicity that the original quickly became?