Hi mate, I agree with you about bitcoin. But I am not agreed with you about USDT or Tether. There are many claims about tether. People still don't trust tether fully.
Tether argue that it's value is equal to 1 usd . Basically, it is just a statement but has no proof. USDT is not actually backed by the dollar at all.
Mainly, people use Tether to make quick cash to USD of a large amount of Cryptocurrency when the market of cryptocurrency become cashless and the price goes down.
Thanks.