He only has himself to blame for being marginalized and relegated to the kook gallery. Like my grandfather used to say; "stupid is supposed to hurt." (Hey, that's kind of Darwinian, don't you think?)
...and I'm going to steal that phrase for the rest of my time and pass it on to my kid(s). I love older common sense phrases. Unfortunately, my family uses ones like:
"Shoot, boy...dat's one helluva get-up...you look slicker'n snot onna doorknob."
Again, that means a lot coming from a serial plagiarist. Let me know if you ever decide if you ever decide to stop plagiarizing other people’s work, and I’ll be sure to refer to you as the “former” serial plagiarizer.
He would know; after all, he is your grandfather, and I can understand his embarrassment.