Unfortunately fiat rails need fiat rails.
I asked Jack to implement a debit system instead but I'm assuming the credit card scheme is to liquidate people honestly since the APRs will probably be like 15% to 40% or something since this last dip almost caused a bank run on the exchanges.
Paying fiat to acquire free bitcoin is an obvious deal for Jack.
People of course will be satisfied with a credit card too since they're probably all fiat maxis anyways maxed out on credit cards, and want muh protections plus more liquidity against the one asset they own.
I have mixed feelings, makes buy, borrow, die easier for poor people since most institutions require $30,000 to $100,000+ in assets to live off your stocks or home equity, etc.
It's good when prices keep going up but will probably ugly quick if things crash.