Collaterized sats and leverage has been around since Poloniex. Fiat has been around since Tether launched on Mastercoin - or arguably, since you could buy Bitcoin for Linden Dollars.

What the "новые костюмы" are saying is that they are going to suck banker pipi until they will fully integrate it into the tradfi system. There's no innovation here though, only scaled up exploitation. After all, Bitmex had a good solution for lev'd BTC longs since their inception, but the scammers need more liquidity.

If however you exploit people and businesses that probably should stay far away from debt and leverage, then you may get the liquidity you need.