Why would they be secured there? The device doesn't allow setting any of the dangerous settings, so noone will break their displays this way.
Look at cars for example... pretty much cars have systems in place not to overheat (thermostatic valves, fans, etc.). Most even have code to go into limp mode and turn off if they overheat. Now imagine someone taking the ECU out of the car, installing gentoo on it, putting it back in, and forget to write a script to check the temperature and turn on the fans when needed... the car would probably work ok when driving high airflow) but when stopped, it would heat, overheat and eventually something would break down. Do we need some kind of a hardware system in our cars to turn on the fans, or something that turns off the main relay, because someone decided to hack the software and forgot to implement sotware limits and checks?