>>54555134First, jobmon is more meant as a pejorative than neutral designator, like the difference between nigger and negro: the former singling out bad apples mostly.
Thus "jobmon" always implies thematic hamfistedness, to be poorly executed conceptually, which in the context of this series means to sidestep naturalistic design and take away from the idea of Pokemon being wild creatures that could have evolved independantly of humans.
Greninja is very naturalistic. You can tell it's a ninja, but its design uses nothing not intrinsic to a Pokemon's own body to achieve that effect, and when you examine it closely nothing jumps out as "ninja" in fact, it's just a frog. It is on the border of subtle and obvious which is good, because it's obviously meant to be a ninja frog but the way it achieved that effect was through subtle touches that aren't beating you over the head with the idea.
A bad example, i.e. jobmon proper, is Hitmonchan, which has clothes including boxing gloves and a humanlike face, making it just an ugly man boxing rather than a creature that conceivably exists as its own evolved creature in an ecosystem or whatever. There's no subtlety, nor attempt at naturalism.