That was the collapse of ETH, because most of the airdrop and bounty programs were through the ERC-20 platform. Do you think the same thing happened?
Ethereum can´t die, it is the power for more than 2000 blockchain projects and dApps. Ethereum has a real use and that means that Ethereum also has a real value, it can´t go to 0 because all of these projects will die also.