Christopher Tsai, a significant Tesla investor, expressed concern over Elon Musk's involvement with the Department of Government Efficiency (DOGE), hoping it is temporary so Musk can refocus on Tesla. Tsai's firm holds 69,700 Tesla shares, making up one-fifth of its $137 million portfolio. Other investors, like Ross Gerber, share similar worries, citing Musk's distractions with AI and political activities as detrimental to Tesla's performance, which has seen a significant stock decline and sales drop in key markets.