It doesn't affect anyone except people who want it to. It's literally some random person whispering into the wind on the internet. I'm uninterested in hearing how it actually affects you because it doesn't actually affect you, you just want to cry about something.
"You" in the proverbial sense of course, the way you used it above.
Good for you if you're not affected, I guess. For many people, Internet trolls can cause psychological harm. This is not some obscure thing. Teens have been committing suicide due to bullying on the Internet for decades.
It doesn't work, because they don't stay on the chans. They infest every space they can, doing everything they can to be unignorable. They're even on HN.