Earlier quoted context omitted.
What's wrong with them being arbitrary?
In what way are arbitrary values meaningful ?
You seem to have a really big chicken-and-egg problem here... you want morality to be universal. The problem is, "ethics", "morality", and "values" are all human constructs. We created them, we define them, we discuss them ad nauseum. They are as varied as we are. I don't think that makes them "meaningless".