Don't trust his smile.

Justin Sun bought Poloniex dirt cheap as a pump machine for Tron. As soon as it was acquired, they listed TRX. Then they released wrapped BTC on Tron. Then they acquired Tron's biggest non-custodial exchange. Then they de-listed Tron competitors. Then they launched a Tron-only IEO platform. Probably other stuff too.

He's hiding Polo in the Seychelles and still playing by the rules of the wild west. You think he has any interest in paying off Circle's old debts? I don't.....