Maybe you are right but people are still bringing it here and believe what he say's on social media. Well, we can't disclose the fact that Elon Musk is very influential, he is famous on social media which is very easy for him to gain attention from the public. But what he said about "the price of Bitcoin will rise", I think he is right from that as he never mention when. Whether he is right or wrong, no one knows. In fact, everyone can make their own speculations based on their market understanding.
"The price of Bitcoin will rise" is what I think that Elon Musk believe and those who are influenced by him would make them think that Elon Musk post is a prediction of Bitcoin's price. Why I say that is because of BTC's current price is not the same as before. I am sure you know what I meant. You are right that he is very influential that's why there's still people who follow elon's post and bringing it here to discuss.
And we shouldn't forget that Elon Musk also said in one of his tweets. i.e. Elon said that this Winter will probably last longer. But actually, even without seeing Elon's tweet, we can already predict this. because after the winter is over of course the price of bitcoin will go up, because after the end of the bear market there will come a bull market. and after the decline of course there will be an increase. But the positive impact of Elon's tweet is that it has built trust in people who are about to give up on the crypto market. I am also actually quite active monitoring tweets from elon and also all the important people in crypto. because news is very important in taking our next steps.