This is a cryptocurrency, there's no death switch that the dev can activate to kill the coin. It can continue forever as long as there are users. Also there is no plan for what to do after the swap period, Bitcoindark will not have any dev team left but if a new one will form, maybe James can airdrop the coins to Kmd holders and Btcd will continue on his own path.

I strongly suggest to swap, except the name everything has moved on Komodo. If you don't swap you miss the potential gains and instead hold a coin that is 90% dead. Even in the 10% probability that a new dev team forms it will take a long time (if ever) to reach the level of Komodo, and in such case you can still get Btcd with a later airdrop. So swapping is a win-win in both case.