This won't be the main reason. Most people know in the cryptoworld that until decentralised exchanges (dex) like bitshares replace centralised ones, including the planned one from Binance, there will always be news of exchanges getting hacked. Of course it's volatile, there is uncertainty for those who are uncertain (but SBD is less so!) Volatility = opportunity.

It's more likely that it's a market cycle where certain folk who have bought in get bored or lose confidence (with a few bad stories to assist, like market manipulation) . The bigger picture is that loads of development is still going on that will make some huge waves next couple of years. Keep Calm, Hodl on and keep earning/spending crypto guys in sites/coins that you enjoy using.