Mew The Gato
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First of all, what difference does that make? The concept and the Pokémon have no real design gap, they look almost the same. If you base a Pokémon off of, say, a turtle, it shoot look like Blastoise, with turtle qualities but distinctions that differentiate it from its natural counterpart. In the case of Vanillite and Vanillish, they look just like their real life counterparts with very few, minor differences.
For example: View attachment 10325 is more or less the same thing as the Pokémon it's based on. Simplicity doesn't mean it's not creative, a lack of deviation from it's basis (an ice cream cone) does. That's what makes Voltorb unoriginal, it's what makes Trubbish lack any form of creativity, and it's what makes me feel for Muk and Grimer. They could have based the Muk family on what they are, which is more or less sewage, and made them brown and lumpy, but they didn't, because that would be uncreative. So instead of being lazy, they made them purple and amorphic to represent their toxicity.
Difference between basis of a concept and the concept itself is what determines creativity, not how it makes you feel personally.
Good, we have established that creativity depends on fact.
And good luck finding an ice cream cone with a face which can fly and use Ice Type Moves, along with a sentient Pokeball which can zap you into oblivion, along with sentient garbage that can walk and shoot sludge at you.