The players gonna play, and the haters gonna hate. Ignore the people who say such bullshit, and you'll remember me. There's no reason to talk seriously for this subject if your interlocutor hasn't spent at least 100 hours to study it. It wasn't dead, isn't dead, and won't die. It's needed. If it was dead, it'd cease to exist; no blocks every 10 minutes, no merchants accepting it, no people talking about it.
Bitcoin is not dead because there is still high demand coming from it that makes the people benefited from it.