Hmm, im maybe gonna stop hoovering out my rads now, been doing that for like 15 years without killing anything but like you said youve done it for years without a problem. I guess its like crossing the road, ya can do it for years without a problem then one day splat.
But have I ever destroyed a GPU by dusting it? No, I'm not a **** 

Though I didn't clean or use my old PC for over a year and only decided to get it cleaned and working again so I can't give it to my nephew.