Statistically, approximately nobody dies in mass shootings (per [0], 387 deaths in 2018). Getting up in arms about something so small is absolutely a moral panic.
Statistically, approximately nobody is worse off for 8ch being inaccessible.
Presumably you have some threshold of statistical significance that would cause you to be worried about risk factors, but that threshold is itself subjective. Besides the questionable proposition that the number of deaths below that threshold don't matter, a lack of interest in the problem impairs the ability to make future predictions, since by the time you do take it seriously, you'll have to do a lot of catching up before you can assess the future course of events.
you might like to think about this in similar terms to epidemiology. while a small number of fatalities from a disease outbreak in a remote location isn't that troubling to most people, epidemiologists are in the business o assessing the potential scope, speed, and severity of communicable diseases and seem to prefer nipping things in the bud to waiting to see whether they develop into a pandemic if left alone.
Of course more people die of cancer, diabetes, heart disease, car accidents (and probably any number of other things) than in mass shootings every day.
But the seemingly random and violent nature of it is what's scary.
I can eat healthier, exercise, buy a safer car, drive more carefully, etc etc. But mass shooters aren't really avoidable while leading a normal life. That makes it scary and noteworth.