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These things are not hard to see when being honest. The females i mentioned had personalities, backround stories and dialoge that fit their fictional world well. Meaning, you can tell they were not tacked on, or added for diversity, but deeper characters who were probably created along with the world they inhabit than Tauriel.
Your claim was to the thought process of the authors or filmmakers in addition to the fan reception, and T.Allen.Smith is correct, you don't know that, you are simply making an assumption. An erroneous one, I suspect, because this sort of thing always has to be a conscious choice at some level. The insinuation that you're able to see things clearly because you're honest and others aren't is conveniently self-serving, but I think it weakens your argument further than it already is on its face, because it demonstrates a closed-minded mentality. In other words, you're operating under a preconceived idea, and any information that comes to you is taken in or discarded not on its merits, but on whether or not it reinforces what you already think. Information that is lacking is assumed to conform. It's not a logical approach to the issue.