Ok, ill concede the Arceus point. However, the Dark type is literrally evil type in Japanese! Doesn’t this imply that there are quantifiable measurable charactheristics of evil in the Pokémon world and therefore morality is objective over there? Also if i am not wrong there are a couple of Pokémon that can “sense” the good in people.
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I think Dark-types, if anything, are a really good argument for the absence of an objective morality in the Pokémon universe – the type literally called あく/悪,“evil” is made up mostly of Pokémon who, while commonly associated with negative emotions or dirty fighting, are for the most part portrayed as more misunderstood than malevolent, and basically fine when you get to know them (Absol and Darkrai are the poster children for this). Either that, or Pokémon’s position is that evil is a real objective thing but it’s totally rad. Also, I suspect taking “Dark type” = “evil in an objective sense” would mean that humans, who seem to be typeless, can’t be evil in the Pokémon world – or at least, they can’t be as evil as, say, Pangoro, of whom the Pokédex says “although it possesses a violent temperament, it won’t put up with bullying.”
There are lots of Psychic and Fairy Pokémon that can sense emotions or even read minds, and that kind of power might well be a good way of deciding, for instance, whether you can trust someone. You could determine whether someone bears ill intent towards you personally, or whether they are generally callous or compassionate, selfish or generous, honest or deceptive. I don’t know for sure off the top of my head whether official sources have ever phrased that as “sensing the good” in someone, but let’s assume for the sake of argument that this ability has been officially attributed to… I don’t know, let’s say Gardevoir; it seems like a likely suspect. So at some point someone in the Pokémon world has claimed that Gardevoir can “sense the good in you,” and that has somehow become common knowledge. Well, what does that mean, and how do we know what it’s sensing? Would we trust that more than… well, more than if a human made the same claim in the real world? ‘cause there are real people who claim to be able to do that. If the person saying it is a trainer with a Gardevoir, might they have some ulterior motive? What about if they’re a person, organisation, or even a historical government from a region where Gardevoir are native?
I think the only way this question could be meaningfully simpler than it is in the real world is if someone at Game Freak or Nintendo or the Pokémon Company deliberately set up the world that way, and then told us so. And even then I would still try to poke holes in it, partly because that’s just what I do, but also because I think the act of explicitly setting out to create a fictional world where morality is definitively known to be objective is itself an invitation to philosophical challenge.