Taken from the number 8 rule:

 So a part of the community realizes that many coins are listed on several exchanges yet and its keep being traded with very low volume sometimes without knowing that are dead coins.

So the prematurely declared dead as you have mentioned that is a process that has been discussed many times in this thread,  From another perspective alls coins  no can die because at any moment can be revived with a minimum of effort in most cases, But on this thread it is precisely the opposite dead is dead, Moribund coins they must be declared dead on some point, This should be done by any decentralized official organization of the community  responsible for issuing the rules that must meet the different coins to keep in the game, As this happens if it happens, This thread is merely a perspective how to understand what could be called as a chaotic state where almost coins look to have very different purposes instead of  crypto  claims, Which could lead to a security hole that must be closed through education not support all of these releases. At least to have the views of experts without any interest but that giving the green light to any project or red light in each case. Unfortunately, The statistics do not look good until now.
Some might object that BTC not much interest when it was released  and history could again redone with each new coin but this concept should not be valid again mainly due to security problems for example. At least it brings an opportunity for new incomers know how is moving some projects and that they should not believe everything that they read to invest but after they have form their own opinion about everything to minimize the risks involved.