800 altcoins might be dead,but their devs are waiting for the next big bull trend to create and pump another 800 coins.The 70% btc drop from it`s max cap isn`t something shocking.Back in 2013-2014 bitcoin price dropped from 1300 to 200 USD.This is more than a 70% drop.
The crowd doesn`t have the thing called "memory".There will be more bubbles and more pumped coins.
What if this December lead to thousands of altcoins borne and raise with the support of bitcoin's growth. Fluctuations are crypto currencies nature and yes the investors and the devs know it. The teams just need to focus on developing their services they came up with. When the market sees the uniqueness, investors do fall investing on the coins. So blindly lets not blaim bitcoin's price drop did cause 800 altcoins to be dead or disappear. Its not the right decision.