BitMEX co-founder Arthur Hayes predicts Bitcoin (CRYPTO: BTC) falling below the $40,000 mark, as Google search interest in crypto wanes. What Happened: In his latest post on X, the cryptocurrency entrepreneur changed his tone compared to his last prediction that the bull market is just beginning and that Bitcoin would be around or above all-time highs by the end of 2024. In the short term, Hayes is more bearish: Bitcoin plunged below $41,000 on Monday, a correction of more than 20% following its high of $49,000 in the aftermath of the Spot Bitcoin ETF approvals. Coinglass data shows a moderate…