I don't think Dogecoin is going to die. Elon Musk prefers it. Musk has a lot of brainless fans. When Musk posts support for Dogecoin, many people will buy Dogecoin. Of course, many people will buy or sell Dogecoin depending on the timing, because they all want to make money.
Dogecoin is a relatively successful memecoin.
The main reason Elon Musk is because he hopes that the price of Doge can skyrocket so that he can get a big profit, according to many reports that Elon Musk has a big stock with Doge, of course he has the capital to continue to pump Doge and then when he feels getting a big profit then the best thing is immediately sell.