It's sour grapes. I first heard of bitcoin in a HN post 11 or so years ago and I'm still kicking myself for not mining a few thousand then. "Nice idea but it wont succeed" were my thoughts...
At it's peak, annoyed, I tried to find my old computer with my wallet. I gave it an honest try, but then looked up the amount the doge was worth. Somewhere around $20 at it's peak. I would have really been bummed if it'd been worth anything.