Gud to know that they liquidated their position, removing any support for the Criminal Coin.
This is called money laundering, selling eth (or etc) to bitcoin or whatever means money laundering, especially if it is fiat, and in this case, i don't think it was fiat.
I don't know what is the problem with XMR, but i believe that ETH and ETC are way too complex for normal to use, and this means that nobody there is caring for common people wether they can accept or not their coin.
They werent made to be used for currency. ETH was made mostly for smart contracts.