This disc brake menace is a lot like the Big Four Ice Caves.
We have a local mountain called Big Four, because in the winter time a snow field forms in the shape of the number 4. (We have a lot of mountains here, eventually you run out of creative names and resort to stuff like this.)
At the base of Big Four Mountain is a glacier with an ice cave. People ignore warning signs and go inside. A total of 4 people have died this way in the last 100 years. Locals want a fence erected, the caves bombed to smithereens, etc. People feel like those caves are more dangerous than a sharknado, just like disc rotors.
It's a fact that in the last decade more people have died from drowning in their bathtub than from disc brake rotor cuts and Ice Cave collapses combined. More people have died from bench press accidents than from both causes together. Nobody wants to ban water and exercise.