Unfortunately there is not anyone dumber than Musk to whom he might sell the platform. That being said, even Musk isn't capable of destroying Twitter (at least yet). The site is still here, and all the profiles with their 280-character messages still load.
Trust me, I want Twitter to suffer the worst death of all. It's just not likely that Elon Musk will be the reason why the site falls, at least not from a technical standpoint.