[Y_Y]

You correctly describe my position, but I'd add that I don't yet see that perfect equality would be more desirable than some small amount of inequality.

Even behind the veil of ignorance I can imagine that, say, a society with a small amount of inequality would have higher average wealth and that most people would be happy with such a system even if, say, 10% of people were worse off than under perfect equality.

(For balance, maybe you could have a "crabs in a barrel" style of enforcement where all of the equal society members equally ensure that nobody becomes richer or poorer than anyone else. See e.g. this old story https://granta.com/the-black-sheep/ )