West gets moral high ground not because it's blameless - it isn't - but because it's faults are smaller. It could be counterproductive to judge something on a boolean scale - "perfect" vs. "not perfect so perfectly bad".

West is much more transparent than non-West, so we have better chance to differentiate good parts from bad parts. If we don't have such opportunity, and we consistently get burned with bad parts, we're forced to assume the whole non-Westness is bad. Here "West" and "non-West" is somewhat similar to "USA" and "China".

If China would be more transparent, if West would see differences, and interactions between those differences, and could judge the parts by those interactions, the scope of blame can be refined. Similarly with more transparent West we can see evolution of society or its parts towards more or less cruelty towards each other and judge and act accordingly.