The Luna fiasco was a consequence of Luna specifically encouraging people to hold UST, encouraged with unsustainable incentives. That dynamic doesn’t exist in the context of USDT, there’s no benefit to holding USDT.
The problem with USDT is that so much of the current cryptocurrency market has been propped up by USDT that probably isn’t backed by any real assets.
Tether print $1bn of USDT -> buy $1bn worth of BTC on an exchange that uses USDT (e.g: their own…) -> price goes up and increases the market cap by orders-of-magnitude more than $1bn.
If you have exposure to the cryptocurrency market (whether you hold USDT, or BTC or own $COIN stock) and tether blows up, you will very probably be hurt in the fallout. Buying BTC with any USDT held is a false sense of security.
If you don’t want to be exposed to the tether blowup contagion, sell everything now into cash-in-your-bank-account (not “cash” on an exchange) and wait.
If you want the smart contract, I'll do a $25k min. Once you give me the money, I'll do this:
1. Load a smart wallet with 1.2x equivalent value of ETH (which I'm long)
2. Tie it to a smart contract using a price oracle that will liquidate the ETH if the ETH/USDC price (using some combination of high-volume exchanges) drops to 1.01x of the amount of USD you should get
3. At any point of time, you can transfer in your strike USDT to exercise the option and receive USDC in return
This way I get to be long ETH and you get to be short USDT so long as you trust USDC (which is audited)
1. I won't be able to liquidate the ETH to USDC and transfer it to you => We can force me to liquidate using a DEX or Uniswap pool. Alternatively, if you're very worried about this, I'll just charge a higher premium and post USDC into the account. That's just a pricing problem
2. You won't be able to redeem the USDC I give you => You'll have to trust Circle here, yeah. If you don't trust their audits, we can use another stable coin, but I think USDC is more trustworthy than BUSD and there aren't pairs for ETH to very many other stable coins that have enough volume to keep the spread down so I can safely liquidate