Online abuse is primarily a social problem, not a tech one:

“I was young, and that was an important explanation for why I behaved how I did. It was an outlet – social media. It didn’t feel like it mattered at the time. I’ve moved on and I’m doing OK,” Ng [THE ABUSER] said.

“I accept what I did was wrong and now want to forget this and move on. I have tried to start afresh. I didn’t expect this to unfold in the way it did and just wanted it to be resolved. I really regret that it amounted to all this and happened like this.”

https://www.bbc.co.uk/news/uk-68293359