We don't have any perfect explanation but maybe Elon musk is increasing his popularity. If I'm not wrong, He is the CEO of Spacex and Tesla. By helping others he is increasing his popularity. Although this year every altcoins will pump, so by helping DOGE coin
Elon Musk is the richest person in the world right now and you think he needs other publicity to get popular

. Elon is active in social media and this is not the first time he tweets about cryptocurrency and doge coin was his go to coin and you cannot pin point that the price is pumping because of his tweets as he is not asking anyone to pump.
Indeed, he is a market influencer, but I was just wondering why he becomes a crypto lover this time and he chooses Doge. Not knowing what is the reason why he is promoting Doge attached on his name in social media account but I don't want to spend my time digging on it.
And now, people get surprise, and they are asking why. Not to mentioned that he is investing Doge but probably he got a lot of it. That was more exciting to see what will happen to Doge coin in the coming days as it was a coincidence that the Bitcoin is also rallying high. Maybe, we can blame Elon Musk for this...