Through trial and error, some of them might have been predicted correctly in the past. And they have large followers that believe their analysis and follower their predictions. One social media so-called expert recently shut down his social media platform because he predicted that bitcoin would keep falling until it goes into extinction. It was his followers that attacked him until he forcefully closed his page.
No expert not even ChatGPT can accurately made a prediction about bitcoin. They make what I call informed guess where there are so close to the what-will-happen next. But then again we know that some of these guys are just chasing clout and or are looking to draw traffic to their handles because they get paid for traffic.