This didn't just start now, for a long time investors and traders have used tweets and actions of people who have some kind of influence on the market to make their short term predictions. The thing is, this is usually a short term strategy and as time goes on, those people no longer have as much influence as they did, for example, Elon Musk. Thus traders still use technical and fundamental analysis, particularly when you are looking at the long term.
Trading outcomes could be somehow influenced by VIP’s and celebrities but the length of duration is only temporary. That’s because their influence do not last longer, everything still goes back to the basics, having fundamental and technical analysis that would help to determine the final outcome when trading.
Newbies in trading may not realized it now, but eventually, when they start losing consistently, that’s when they’ll start doing the fundamentals and technical thing.