I’m not sure if I’d say altcoins are dead, as I doubt that will ever be the case. However, it is clear they are under attack by the United States government which is never a good thing. Values are crashing harder than I can remember in recent memory. It’s a bloodbath and it appears to be directly related to government action against exchanges.
So far, there are no prerequisites that the cryptocurrency will be completely centralized and controlled by any government. But attempts by some states are alarming. No, altcoins and crypto will not die, they will only become a pet animal of some state. It is sad.
The altcoins that will die are altcoins that are still centralized, because in cryptocurrencies this includes altcoins that must be decentralized,
and what I think is currently decentralized are Bitcoin and Doge so you have to be wise in investing in altcoins.