Well, of course I don't think anyone should be shunned or told, "Gee whiz, sorry, you don't fit our criteria for Otherkin so could you please stop using that title."
I was more thinking of what a dictionary definition would be like if one existed or were ever created. If the community were pressed to define Otherkin, what would it say? What lines would we draw? Obviously there are lines or what's the point of calling ourselves Kin to begin with? You know?
Still, my own theory of what I am isn't set in stone. I don't expect others to have arrived at that point.