>>52865666It's not "the other version isn't canon," it's "this occult magazine is not a reliable source"
The opposite version references Occulture instead of the Scarlet/Violet Book, since the Scarlet/Violet Book only exists in the appropriate version.
Heath's notes are a more reliable source based on direct observation, and the Pokédex sticks to the facts when it references it, usually only stating that the Pokémon resembles the creature described in the Book and is named accordingly (except for Koraidon/Miraidon, who were given a proper name by the professor). Some of the entries will say that one or two sightings have been reported outside of the crater, which presumably is the basis of the Occulture articles, but they'll leave it at that.
The Pokédex repeatedly casts doubt on Occulture, describing it as "occult," "paranormal" and "dubious," questioning if the creatures it describes actually have any relation to the ones in the Scarlet/Violet Book, and giving information that outright contradicts facts established by the game (eg. Iron Bundle is said to be from an ancient civilization rather than from the future).
Occulture is a tabloid magazine in the vein of Weekly World News, connecting unsubstantiated reports of creature sightings to the Scarlet/Violet Book (which is surely popular and well-known among its audience) and embellishing them to pander to its readers' interests (inserting various dinosaur, cryptozoology, and general science fiction tropes). Treating the Paradox Pokémon as cryptids is a cool theme, but taking the nonsense published about them at face value and trying to spin it into an argument along the lines of "this doesn't make sense therefore a wizard made them" is just in bad faith.