That's why say virgin blocks mined in China, have more value than btc that's been tumbled online, virgin addresses never used private-keys are more valuable.
BTC != BTC
Some animals are more equal than others.
I think this is true in any case for even cash money/fiat that is supposedly as fungible. As long as it comes from certain sources, banks and other financial institutions are not supposed to allow it to be accepted. So I think we all have to agree here, this is not REALLY a Bitcoin problem but a money problem overall.