Last two days, Ethereum gave traders lots of chance to trade with very wide range of price with its dumps and recoveries. Real traders will feel happy with those movements of Ethereum and don't complain too much, I think.
When the price is cheap, traders which sees the opportunity won't complain as that's what they want, but for those who are holding and waiting for ETH to rise in value, they would complain but actually they should not do it because they still won't sell right away if ETH's price will rise as they like a high profit, so this long term holder should already anticipated that pump and dump is normal in the market, and they should focus on the overall growth.