This is why I hate internet trolls and cyber bullies. They are all so brave in safe distance but most of them would not say a word to him if they saw him irl.
But hate won't change a thing so I will put it aside.
All my condolences go to the poor guy, I can't imagine suicide as a solution but with such pressure from people who surrounded him he probably saw no other way out of here I wish anyone could've stopped him and shown him a world in a better way than those jerks. I am not sure what the fanfic was about but even if it was *that* kind of fanfic he did not deserve to be treated like this. Even if it was a worse one with bad grammar or pointless story - he did not deserve that. I can't read article at work, but I will at home just to know the details. But nothing justifies bullying.
I also hope his family and friends will feel better soon. They should not blame themselves. Suicidal people are often masters in hiding their true emotions. Nobody should blame them for not noticing what was happening.
Maybe there's a chance to do something in memory of that guy? I am no expert in such events, but...
One time tab I've been working on for entire month was shamelessly copied and pasted on ultimate-guitar.com with no credits to me. So I can relate. I never bullied the person. I reported the issue and sent link to my own tab on that exact site and it was removed shortly after. Such cases can be sorted out without bullying.
What he did was bad, but bullying is not a solution. The guy should've been reported, not pushed around like that. Ironically it made case worse, because now he won't be seen as the one who did something wrong. He will be seen as a victim and barely anyone will care that he copied work of other person.
In the end bullying solved nothing.