Also, the Hurricane is UL listed which makes some difference, you can look up what UL means, basically it was vigorously tested for hazards. They can still smoke up and burn out, nothing is exactly fire proof when it comes to mini fans.
It happens to people on a small scale but I read somewhere that they aren’t meant to run 24/7 and to put them on a timer or give them a small break here and there which no one does. Fire is scary but this fear goes away quick when you see how good a fan they are to most people. Defects just happen. Even with hurricane.