It’s very difficult for a blockchain to literally die.
Marginal cost of runnning a validator are low, so eventually there will always be a validator.
This doesn’t mean the project is alive.

I will always Hodl SEM, as it’s airdrop is the reason why I opened my account here on Bitcointalk.
And as a memento on why I am a bitcoin only investor.
I had the opportunity to sell my bag for 12,000 sats for each SEM. LOL!