Jim Cramer, host of CNBC's 'Mad Money', has cautioned investors about the new spot Bitcoin ETPs approved by the SEC, echoing JPMorgan CEO Jamie Dimon's 'caveat emptor' stance. He emphasized the need for investors to be well-informed, noting the discrepancy between the funds invested in these ETPs and the rise in Bitcoin's price. Cramer also highlighted SEC Chair Gary Gensler's skepticism and warnings about the risks of crypto assets, despite the SEC's approval of Bitcoin ETPs.