Thanks for the video mate, my first time watching and I'm impressed, you covered the topic really well!
The bitshares alternative ecosystem is something I'll have to look into further, I have never given it a thought up until you mentioned it.
I'd never hold USDT long term but I'm relatively comfortable holding it for day/swing trades if necessary...
As much as I agree with you that it's a ticking time bomb, I do have more confidence in it than most people tbh. They're in close relationship with Bitfinex which must bring in HUGE profits to ensure it's covered, alongside exchanges like Binance also being within their best interest to help Tether out in any way possible. I watched an interview with CryptoLark and the CEO of Binance and he said, although he hadn't seen the Tether account personally, he's confident that's it's all okay and he would help ensure things went smoothly.
I think the biggest issue is potentially the banks pulling out though.
It'll be interesting to see how things develop over time :)