Thank you for this post, it was informative.
I did use USDT one time and that was it but after I heard all of this information about it and what is happening with it I will try to stay away. I have started to fallow the other project DAI from MakerDAO and that one looks a bit better because they are trying to regulate it with another coin. I still don't know if all of this will be possible at the end because the best way of having this is that behind all of this stabile coins is a real fiat but that takes away all of the decentralisations of a crypto in a way.
Just a thought.