Elon Musk has friends in high places.
He bought Bitcoin low, and he's already up a ton of money.
Hey Elon, will you crash the market so I can buy in low?
Sure, friend.
One possible scenario.
Even more likely is that Elon has loaded up fat and Doge and realizes he can manipulate that even better than BTC. He distances himself from Bitcoin saying Tesla will no longer accept it, now he can transition to Doge and spike the price to the moon once again. Don't be surprised if Telsa starts accepting Doge even though it's also proof-of-work.