It's unclear how much BTC they actually amassed and how much, if any, is left. But at the end of the day, beyond all the techy handwaving, Luna was propped up by essentially Ponzi-like promise of 20% returns and now that has collapsed.
It is perhaps a reference to a libertarian themed science fiction novel published in 1966, called "The Moon Is a Harsh Mistress". In it, inhabitants of the Moon were called Lunatics or Loonies.
That's a short tweet and those who read the docs understand the tweet glosses over the mechanics. UST is backed by BTC reserves as much as $ is backed by gold in Fort Knox. Maybe in a way, but the gold conversion window closed and there never was a UST to BTC conversion window.
UST has convertibility by burning it at $1 into LUNA. Anchor protocol 20% did not seem sustainable. I looked into this contraption and stayed away from all of it. In hindsight, of course it all seems obvious.
https://twitter.com/stablekwon/status/1503296630396645376
More details: https://techcrunch.com/2022/04/06/terras-founder-plans-to-ba...
It's unclear how much BTC they actually amassed and how much, if any, is left. But at the end of the day, beyond all the techy handwaving, Luna was propped up by essentially Ponzi-like promise of 20% returns and now that has collapsed.