I read all these threads about coins becoming officially dead. However, most of these threads are FUD. When does a coin become official dead? Is it when the developer stops developing? Is it when the coin stops trading on major exchanges?
I think you will only know if the coins is dead if there no more update in the coins, and the developer is no longer giving any report in the community or their price value also is zero value. That's the time you need to think about it.