I've come to believe that infohazards are real.
Consider alcoholism: some people never drink anyway, plenty of people can have one drink or a few drinks and then stop. But some people can't stop and destroy their lives. Consider gambling: similar distribution applies. Many people never gamble, many people have a little scratchcard or sport bet now and then, and some people get out of control and sink all the money they have into it.
Gambling is an idea that's a trap. Some people get like this with ideas on the internet. In fact there's an XKCD about it: "can't sleep, someone's wrong on the internet".
Usually there's a single atrocity or injustice that triggers it. Maybe it's real, maybe it's been subject to distorted reporting. But it becomes a monomania. You can't counter them with statistics or variations on "most people aren't like that".