That's really not what that's like at all. Not using the op character in an rpg would be like using the skill system to its fullest but ignoring one or two broken/mindless skills. Not using broken tools to keep the game challenging != intentionally denying yourself game features/changing the game mechanics to keep the game challenging.
OP characters in RPGs are dumb too though, if we're keeping score.
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No problem!
This is a cute and pop genocide of love!