He is only trolling IMO.
Pretty obvious that he is trolling and could be riding the hype of bitcoin as it goes to another all time high. Anyhow, I feel that we would see another massive Elon Musk fake giveaways with his recent tweets
We all know that scammers are using his face and name as the gold standard for duping newbies around. And with his current tweets, Elon just give enough reason for scammers to continue with their activity.
It happens. When Bitcoin rises, those big shots starts singing praises about it.
When it dies down, they just forget it's a thing.