Dogecoin was only promoted by Elon Musk, and I agree with this assertion. Dogecoin has no long-term prospects, as seen by market activity, and the high price of the cryptocurrency it wont last long.
Looks like you just woke up saying Dogecoin is only promoted by Elon Musk and has no long term prospects 
.Did you know that Dogecoin has been around since 2013? So did Elon Musk know Dogecoin at that time and is Dogecoin dead by being in the top 10 coinmarketcap? please answer now.
Personally I don't see any real value that can support Dogecoin, so I also think that its pump was caused only by interest from Elon Musk who can control its price easily. I am sure that he just wanted to make money on speculating the price of Dogecoin, so he bought first and then started his tweets so as to pump its price. He is just a manipulator and he could control Dogecoin's price.