>>37560539Because we've never been given details on how the fuck the Pokedex just sputters out all this information just from having a Pokemon caught with no evidence of if it's a fact or not, which is why you either have people who think it's bullshit or people who treat it as Gospel, like Richard.
Obviously it's not written by the protagonists, nor does it seem to be written by Rotom in Alola's case, so people are just trying to fill in the blanks for themselves since this key element of the games that's been around since inception hasn't been truly explained.