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?
An altcoin officially becomes dead when its blockchain stops advancing. That is the heartbeat.
Not at all. On yobit there are a lot of 1 sat coins, which wallets are "under maintenance" for months.
Anyway, you can look from different perspectives on this "dead" thing