We have seen ETH going up and down so many time. Now do you think ETH is officially dead, why do you think so?
every coins goes up and down inlcuding bitcoin does this mean they are dead?. just because it goes going up and down does not mean it is dead. look at the coinmarketcap if it is dead ethereum should start to fall in rank until it hits zero value. many coins today use ethereum blockhain. before you say or ask something like this at least do some thinking.