Agreed, following these kinds of tweet can be helpful e.g. a Wall Street guy made 2.4M in a day just with a tweet. But also a question arises how can we follow each and every person on Twitter for (financials). It's highly impossible to track every single tweet as we all know there are lots of Spam and due to which it's ought to happen we miss such kind of tweet.
Another instance Twitter's stock was down 20% after a tweet. Elon Musk tweet about a product line and Tesla was down 4%. Many made money and many lost.