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 has never run out of negative attacks, and bitcoin claiming as dead has already been said a lot of times. So this is not new to all of us, except for those newbies who are still collecting memorable experiences. However, if bitcoin is completely dead, then expect that the whole crypto market will be dead too because bitcoin is simply the blood and future of the crypto market.
Negative attacks over the market is common.