The best way to kill a coin is to turn it into an ERC token.
Without its own blockchain, only one shell remains of the coin.
ETH continues to swell absorbing the slag in the form of numerous tokens.
I'm sorry that many people do not understand how it works and are ready to put their money in a bottomless bag.
I agree somewhat with this statement even i wouldn't go as far as killing a coin with it.
But in my opinion it's as well one of the worst choices for a project that aims mass adoption.
ERC-20 tokens are just difficulty to handle for the average joe that isn't mining/trading and new to crypto.