I think that the increase in popularity and spread of gore & other disturbing materials over the past ~5 years, specifically among young women, is rearing it's head here.
I may be tinfoil-hatting outside of the scope of this thread, but since ~2015, online spaces largely populated by women have had a huge uptick in the spread of gore / CP. (Tumblr being the biggest offender with how long they allowed CP to go unmoderated.) We're reaching the point where people who would've been teenagers when they first interacted with that sort of content are reaching young adulthood, and their behavior is escalating with time. I wouldn't be surprised if we see an emergence of more young women doing shit like this in the coming years.