Bad news for Cash is that there're no USD markets, so the only way to sell is to dump against BTC.
Ethereum for instance is much more stable during the current dumps because it can be traded for USD.
New asset: Bitcoin Cash (BCH) trading now live! On Kraken
https://blog.kraken.com/post/1191/You also can traded bitcoins cash to USD on
https://quoinex.com/ i don't understand about your statement
with there are no USD markets for bitcoins cash, the fact many exchangers support for trading bitcoins cash BCH to USD.
And many more the altcoins can be traded for USD except ethereum.