It's impossible to have a discussion based on news reports, so here's a link for the original paper. I copied the title and abstract below. https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3195066 I browsed through the paper. Their main result, if I understood correctly, is that they found "considerable evidence that Tether is used to purchase Bitcoin following Tether authorization and a drop in Bitcoin price, and…
Tether is starting to look like a Madoff-scale Ponzi scam. What maintains the $1 price of Tether is a continual net inflow of cash. Tether is known not to be backed with sufficient real assets.[1] If there's a period of net outflow from Tether, the whole house of cards comes crashing down. [1] https://www.marketwatch.com/story/tether-reverses-claim-of-1...
When Madoff collapsed, his investors were shocked. If Tether collapses, precisely zero people will be surprised.
When it's common knowledge that it's a scam, is it still a scam?