Reading an article like this reminds me of the work by psychologist Philip Tetlock who studied expert predictions in areas such as economics and politics. What he found was truly shocking. They are on average only slightly better at predicting than random guessings, and are worse than basic extrapolations.
One of the most powerful ideas in statistics is the concept of regression toward the mean, first observed by Sir Francis Galton during the late 19th century. It is often called mean reversion in finance. Loosely speaking, there is a tendency for an asset that performed better than average in the previous time period to perform closer toward the average in the next time period.