Ive been a fan of fanfiction.net for like, 10-15 years now, and I have to agree with this. I cant count how many authors who have made tearful posts that they are suspending their stories and deleting their accounts because despite having literally thousands of positive reviews, a handful of vile trolls saying the most hateful things they can destroyed their enjoyment of writing fanfic. Its awful how this tiny minority of garbage people can have such an outsized effect on others.