Most of the times it's a stupid move with no reason, and it shouldn't suggest that you invest on it.

But remember, sometimes it's a mistake people made in calling those projects dead. A lot of people considered solana and serum to be dead coins after the fall of FTX in late 2023, because FTX was a big investor. But it has been a mistake and both of those are doing pretty well now, and will probably have a future.