Renowned economist and crypto critic Peter Schiff has issued a warning about Ethereum amid its decline below $4,000. Schiff also alluded to Bitcoin, predicting that further declines for the flagship crypto. In an X post, the economist remarked that ETH is now in an official bear market, having dropped from its August record high. This came as he noted that the second-largest crypto by market had just tanked below the $4,000 price mark.