there are number of statements in the article that I disagree with -

• issuing USDT does not influence the crypto-coin price; only buying/selling of a coin (other than a ‘stable’ coin) does move the pricing;
• the problems in bitfinex are with converting ‘stable’ coin to fiat — as a crypto-exchage does not have the authority to create fiat, it has to use its fiat reserves from previous fiat to ‘stable’ coin conversions; as the fiat reserves are not limitless, a crypto-exchage has the choice of refusing conversion back to fiat, ot abandoning the 1:1 fiat to ‘stable’ coin ratio;