>>51685949It's because they work on Go Fest / Safari mechanics. It changes the encounter table based on being inside of a perimeter, but shows spawns on the nearby outside of the perimeter.
>>51685941Elite Raids is a trial feature anyway, which is why the first one is Hoopa Unbound.
It's actually one of the best psychic type attackers in the game, but Mewtwo exists, and psychic offensively isn't the most relevant. Hoopa Unbound doesn't even enjoy fighting type resistance.