And I reckon you read wrongly his "economics is amoral" statement. Having read everything he wrote since 2000 (OK, I haven't finished his economics textbook, but my wife bought it to learn about the subject and I did go through quite a lot of that too), I am very confident in my understanding that he makes that point to state that the fact that someone is rich does not mean he necessarily deserved it.
He even added (no later than this week) that the poors certainly did not deserve it.

It is formulated pretty clearly in my view. I don't reckon he feels any need to wear any badge of libertarianism, in fact he has pretty much ridiculed libertarianism in hundreds of pages.

Earth provides enough to satisfy every man's need, but not every man's greed. Gandhi