As a declaration of what you believe and a menu of justifications for same, it serves, but no one was asking for that. As a consideration of the question actually under discussion there is simply nothing here, and I don't see anything to suggest you have thus far even noticed the lack.
That is somewhat funny to me, I admit. It probably shouldn't be by now. The combination of overweening confidence in sound reasoning with total lack of care for valid premises is a common theme in online utilitarianism, but I think it's the shamelessness more than anything that gets me - like a Monty Python sketch that doesn't know it is one. A bad habit, I grant, but I think I still prefer it over that of not bothering first to find out what I know and what I don't.
Now, knowing that the line between man and other animals is totally arbitrary, we should be fine to retell that story with beavers instead of people, right?
(I won't even get into how I flew there at 1000kph in a giant metal vehicle and carried a universal translator in my pocket, also neither of which were made by beavers.)
Addressing the question at hand is an improvement, but arguing your case entirely from assertion and anecdote leaves considerable further scope. You claim the difference is of kind rather than degree. I can see some credible arguments for that claim. Can you?