How can you say like that? Haven't you noticed Dogecoin's daily trading volume? or have you never paid attention to the position of dogecoin in coinmarketcap?. in my opinion, doge will not die and will not disappear in the market as long as it is still in great demand and is supported by large investors who have their largest capital. what you say is not likely to happen
Don't forget you quote a 1 month old post. It could be true that the price or the volume have decline that time but now not anymore. You know, Elon is good at manipulation and whatever he said, we will then have an impact to the coin. Maybe Elon didn't quit twitter yet and its supporters are gaining a hope once again.
The trading volume and then the coin rankings on coinmarketcap are not fix but they can also change. Remember Luna? It was once a top coin in CMC so his trading volume is also large but look at it now. That can also happen to any other coin if ever their performance deteriorates but dogecoin isn't a loss to us if one day it fell down and die.