Being a realist is one thing but at least acknowledge that regulatory risks have been tested. Any bum can get on board but anyone who can afford a smartphone can afford to pay for their Afterpay spending. You also get bad credit against your name if you don't pay back. People are more likely to default on their mortgage than miss a payment for mascara.
Also have you considered that the regulators may be personally enjoying BNPL? And AML risks managed?