I understand the conversion from dollars to coin. What about coin to dollars? There’s a floor but no ceiling, so I don’t see how this is a real peg.
They address this on the site:
>bUSD is not a stablecoin. It can never be redeemed for USD, and may trade at values other than $1 for extended periods of time.
It's the burn and mint used in Luna Classic, now in physical form.