In fact, it is not completely clear why he generally posts tweets of this kind.
To be honest, I think this is some kind of long-term strategy, but its true motives are not clear to me.
In any case, he must understand that the responsibility for his words lies with him.
Elon Musk has its own hidden motive and for sure, to make advantage of this market for his own benefit. And whales are also riding this market activity so that when people start to panic sell, they will buy those coins and hold them until their price d recovers. This is truly a market manipulation.
However, people start to see the true identity of Elon Musk and if he continue to make negative tweets for bitcoin, this market will be gradually affected. And i think people will never love that. So they start hating Elon Musk and unfollow him. This is jus the same with McAffe before. He will be ignored in the long run and he will make no impact on the market anymore. The crypto market will be back to normal again.