The reason being, assuming tether is legitimate, for every printing they are sourcing additional USD to back the newly minted USDT. The idea they could so consistently find large investors willing to make NEW 100M+ investments while the crypto markets were in free fall is unlikely to say the least.

And it's not as if that's the only complaints about Tether. The fact Bitfinex and Tether has the same management; USDT pretty much acts as a proxy for Bitfinex to maneuver around banking laws; and that USDT supply pretty much grows monotonically are just a few of the other issues that suggest Tether is not legit.

BTC crashes inherently would create BTC -> USDT interest, sure, but not inherently create USD availability for backing new USDT.

Creation of legitimate USDT would mainly seem to happen when there is high USD -> BTC interest, because that is, in many cases, realized by USD -> USDT conversion (with, in principle, the USDT created at that time and the USD in reserve backing the new USDT) followed by USDT -> BTC exchange.

You might see new legitimate, large-scale USDT creation in a crash if, say, bargain-hunting new USD money is flowing into BTC, but the people exiting BTC and driving the price down are holding USDT without converting to USD.

> They wouldn't need to create new Tether during bull runs, because nobody cares about putting their money into Tether then.

Yes, they would, unless “bull runs” in the USDT-denominated BTC market are just money already held in USDT rushing back into BTC, rather than new USD flowing into the USDT/BTC market.