The otherkin or "trans-species" are the real hurdle to overcome. Nobody with an ounce of sanity can entertain the concept, at least at the moment. I could envision a scenario where somebody could be "convinced" to accept it, just like the transsexualism has already. The only real question is if society can withstand that immense level of counterfactualism.

It should not even matter if you do the surgery, is how you identify that matters.