In the context of the manifestations (physical vs of the two, sure, I'll agree that they are two different things, but the notion that they are separable and not linked, except for an extremely small subset of the population, is ridiculous. You think dictionaries aren't influenced by political movements?
That's like saying, "Hey, Cisgender is in the dictionary, it must be legit" when it was nothing more than a feminist labeling to legitimize abnormal behavior.
So what kind of Otherkin are you?
To be clear, I don't give a flying fuck through a rolling donut whether some dude cuts off his dick, slaps on tits, wears a wig and makeup, and calls himself Shirley, as long as society doesn't treat it as some normal behavior and I can point to my kids, in the same manner I would for any abnormal behavior and say "hey, that guy needs help" when they ask me WTF is wrong. What he does with his body is his business, but nobody should be running around pretending it's normal, nor indoctrinating kids that it should be normal. No more so than any other deviant behavior.