So, who's responsible when the Coins dies?
Of course, it's the developer that should be held responsible for the death of their token/coin. Yes, I know there's that negative effect from the activities of dumpers; especially those who get the tokens from airdrops or bounties. It's the duty of devs to know how to cushion that effect and find a way to discourage heavy dumping. It should be done in a way that buyers can also show their strength while paper hands are selling off. Devs should encourage investors to hodl by putting up incentives like staking to earn and other activities. Again, there should be a good token unlock mechanism in percentage that won't be much as to have a lot of tokens released to airdroppers or investors. More importantly, most of the devs are criminals who intentionally would create scam and worthless tokens just to get money from unsuspecting investors. From start, they already know they're not going to develop that project further. It's just a cash out for them, easy money.
Exactly you have said it all. The developers are the ones will make the project more transparent and not in a cumbersome way that will make people to stay away from it. They have to make it in the way that the transaction fee will not high and always low. And they fall to maintain their coins or token then they have to bear the consequences of the dead of their tokens or projects. And whenever there is problem facing the project developers have to look for solution and solve it without delay because right now the cryptocurrency space is on competition so if any project misbehaviour people would just leave it and go to another one.
The genuine developers always look for a way to solve their problem but the fraudulent developers have no clue of their tokens so they let it die. So don't blame investors in any token failure but the developers.