Sad story, but I do believe he was a bit hasty in abandoning mining Bitcoins.
And after all this, I am no longer going to do any bitcoin mining. I will probably sell my mining rigs, or maybe find some other purpose for them. But they definitely won’t be on at full load 24/7 like I used to have them, even though I have a good AC unit in my room.
There were many other options available, he could have moved the machines to a different room, or even in a garage if one were available. With proper airflow, video cards can survive much higher ambient temperatures than is safe for humans over long duration's. He could have even left just his computer with one video card going in his room, but just to quit completely seems a bit extreme.
Maybe it is like when you eat something and later you get sick. Even if your sickness was not directly related, say you had the flu coming on to begin with, the food still triggers that associate later on and you will tend to avoid it in the future.