Years ago I coined a term for this I like to call EFS or Elmer Fudd Syndrome. We always had guys come into the shop with amps bridged into too low a load and I would tell them that they were going to blow the amp up and always got the "I've been running it this way for 6 months", couple of days later they would come back and ask if I could fix their amp.
So now that this guy knows it won't be long now.
Jeff