SP500. Is market "re-act" from FED or vice versa? 29/Dec/23

SPX's chart/market is driven by Fundamentals ( FED) as most traders perceived. But I do agree with Robert Prechter and Alessio Rastani that market/ chart is driven by the "rotating cycle" of "supply/demand" rather than news/fundamentals even though I don't agree Robert Prechter with (Founder of Elliott Wave International) have been calling for major crash (which is severe than 1929) for many years