So, BTC created 16 million coins from air and nobody complained. Ripple created 100 billion coins from air and nobody complained. Tron, Stellar, Cardano, Iota, all in the billions. The top 1000 coins were created from air and nobody complained (most are scams).
Why creating Tethers from thin air is now a cause of concern? That's a coin just like every coin out there, like Tron, Verge, EOS, they're created from nothing by a program, they have the value the market decides it has and the creator has all the right to print all the coins they want just like everybody else.
And the market has decided USDT has more value than all other coins combined as it is number two in volume just behind BTC.
People use USDT as a safe harbor when markets collapse, it has its use, a very valuable use. Of course they will print trillions if they could, everybody would print trillions of their shitty coins and cash out tanking the market if they could, that's the nature of cryptocurrencies.
I fail to see why people complain about Tether (highly valuable) and not about the rest of the scam coins that are draining the market from stupid money.