It's not game's fault if you have dusty graphics card or overclock it till it fries. That's not even a bug.The cards did not need to be overclocked, nor did it require dust. As for it not being a bug, Blizzard issued a software update that fixed it.
Starcraft 2 was not the only game to do it, a few seconds on google finds a rather long list of games that have a tendency to overheat the hardware.
The point is that caution is warranted. I'm among the people who have accidentally fried hardware, and many times have triggered overheating warnings on my machines -- and notably, I don't overclock. Turning off v-sync to get higher framerate has risks and probably shouldn't be encouraged in beginners.