I gave up on this Elon-deranged nonsense after the paragraph in which he demonstrated his profound ignorance of orbital mechanics and the rocket equation, because I’m at an AIAA conference all week and don’t have time to properly fisk it, but have at it in comments.
I’m working on a lunar skycrane project, and doing a trade on how/when to unreel/reel the tether, but I’m thinking about simplifying by simply making it fixed length.