For me if Elon Musk didn't tweet about it people would just ignore it.
I think it gotten that high because of his followers not just in crypto but also his non-cryptocurrency followers bought it.
He got a massive amount of followers not just on crypto currency so maybe those non crypto people also bought Doge because of his words.
When did Musk tweeted about Dogecoin? If I am not wrong, it happened a few months back. However the rally in Dogecoin exchange rates started much before that. But there is no doubt that whenever Elon mentions about this shitcoin, it goes crazy. One reason is that the liquidity is very low when compared to the other shitcoins, and therefore it is relatively easy to manipulate this coin. For my part, I am not very comfortable in watching Dogecoin replacing a technologically sound cryptocurrency such as Cardano from the no.6 spot. It may be a temporary phenomenon, but this shitcoin is doing a lot of damage to the entire cryptocurrency ecosystem.