>>53884622Because it was the first Pokemon to use it prominently
>Groudon: Physical Attacker >Camerupt: SLOWAlso most Pokemon fans are ultracasuals or new, so they probably haven't even played Gen 3.
Ironically if Typhlosion had gotten Eruption in Gen 3 it would have been OU easily but Game Freak was afraid of it overshadowing their precious CHARIZARD.