Not true, It is another ATH day for BTC, so literally anyone that bought BTC in the past and held is in the money. "Many often lose everything" is absurd.
There isn't anything radical or new discovered here, and is trying to drum up 2021 "Tether FUD". Heard it all before. Hasn't crashed. Works on several more cheap, smartcontract blockchains now than expensive ol' ether in '18. Powers billions in defi, loan and other radical new financial instruments. Few believe that there are literally bank accounts backing this 100% today, and you know what? Who cares?
Do I trust an ECDSA signature more than I trust a nameless brick and mortar bank holding some corporate funds. Hell yes. Computational security. Hard laws of math. I'd rather not hold tether in general, but IMHO it is less at risk than funds in bank accounts. I know this might sound strange to you dear reader, but you may not have experienced a time where bank accounts got haircuts, or your bank started freezing your funds. You cannot trust a bank! Be your own bank!
Too many folks are holding onto old ideas of what money is, and do not see what it is turning into. While I do not claim that tether itself is non-controversial, its behavior in the cryptomarkets general is non-controversial in that it holds a peg 1:1 with the USD, and is generally fungible and easily converted.
Chill on the tether fud, next cycle you will probably be sick of it too.