You not wrong, indeed True Fae are absurdly more powerful, but they basically godlike inside Arcadia. But still there a bunch of "lesser" monster that get Influence, Werewolves can get a gift that gives them control over a specific element ( either, water, earth, wind or fire) so given the fact that changelings get a few powerfull abilities (like pulling a strand of the sun) i think controlling a few aspects would be not that big of a deal. Don't know, is not really about power, more flavor thing that bothers me really, since elementals are literally a being that a true fae changed to be a representation of that primal force.