We’re approaching a point where being passed over for “culture fit” is a compliment. Hopefully the embarrassment is enough to expand the founder vetting checkboxes.
You can talk to the people who built their models and they have lots of fun things to say about the ordeal.
Even if your figures seem out of date, your argument against UST also holds for USDT (which underpins much of the crypto price bubble):
There is 7B USD in circulation and the market cap of US(D)T is 74 BILLION USD
All this perceived wealth is going to melt into air soon, and yes a bear market has already arrived.
I personally have lots of misgivings about various crypto but I really don't have enough expertise to argue against someone telling me that I just don't understand and everything is fine.
Surely the onus is on those promoting such schemes to convincingly explain their workings; if you can get 20% a year the explanation had better be good...
This is just the last resort of a scoundrel who knows they can’t explain their scam.