>>28087848Lets remove the Unown from the equation. Since that part really is speculation one way or the other.
While we know Arceus created the universe, we also know that Palkia, Dialga and Giratina were created afterwords by Arceus. These three Pokemon went on to control their own aspects of the universe. This is stuff explained in the Pokedex entries.
The way you seem to think Arceus is the only Pokemon involved in shaping the universe contradicts what we know about the creation trio, even if we ignore Unown for now.