no matter what happens after a thousands years BCH will still remain the coin that split from bitcoin to create a useless altcoin. it is copy of bitcoin without the additional benefits. so it is a shorter copy of it.
it doesn't have any future, it is a centralized altcoin with no usage and nothing to offer. when it comes to altcoins your competition becomes much harder because you are not competing with nearly 2000 different competitors and some of them are very strong even though they may have lower prices right now.
It has higher block sizes and there were some advantages regarding cost and speed of transaction a while ago. Now we are in a downturn with decreased volume and currently it makes almost no difference to use either Bitcoin or Bitcoin Cash. I don't think it's dead, when we enter another bul market the battle between those coins will continue