I can't imagine a more valid use for defamation laws than to prevent someone from knowingly and repeatedly causing death threats and other harassment to be dire

I can't imagine a more valid use for defamation laws than to prevent someone from knowingly and repeatedly causing death threats and other harassment to be directed at parents whose children have been murdered. After being sued, Jones completely failed to defend himself in any meaningful way and lost the suit by default. I honestly have no idea which part of this chain of events you object to. People should be free to send mobs after parents grieving an unimaginable tragedy? Morons who get sued should win by default?