thats the problem - people want to overclock without accepting the risks
And also that people don't recognise the problems that they themselves have caused. People try an over clock and initially it appears to work. They e.g. try a couple of games on it, oh it still works, forget about the overclock and move on.
Six months later a new game executes a perfectly valid sequence of instructions under conditions that make the timing of that said instruction sequence close to the wire on even stock hardware. With the overclock in place the results are still being computed come the relevant clock edge, errors result and e.g. the computer crashes.
Cue lots of ranting online about how the game, or Windows, or the GPU is a buggy POS because it keeps crashing. Never any mention of the fact that they broke their own computer - they don't even recognise that fact for themselves.
The endless coverage in the gaming rags has caused overclocking to become viewed as a risk-free method of extracting the very best from a machine, and a "cool" thing to do to show how clever you are with computers. To the extent that in some quarters you get labelled a mug who wastes his money if you haven't clocked your system to the very edge of stability under even moderate load. After all, it's how fast your machine is that counts, who cares if it can be guaranteed to work properly?