If it's a fraud, then it's one with a working product.
In 2022 when confidence in stablecoins plummeted after the Terra collapse, $20 billion in Tether was liquidated in a month - $10 billion of that in a single day: https://www.coingecko.com/en/coins/tether
Through that black swan event Tether did its job, processing redemptions for collateral dollar for dollar.
