I know of a guy here in RCU, ( I'm sure you know of him too if I said his name) that starts threads all the time for no real reason than to start a long drawn out pissing match. Drives me crazy.
Yah, I wonder how many spark plugs have been blown out of engines that did not equate back to operator error? I have never seen one. With glow either. Most likely a cross thread or plug not screwed in all the way.
Either way, I call BS as well.