Still not a scam, although I agree that it's not ethical to push this on impressionable kids who would probably choose to go in debt for some new clothes.
Unlike all the examples above, Afterpay doesn't charge interest, has capped late payment fees, and has a very low debt ceiling. It's the perfect way for younger people to learn how to manage debt.
Young adults actually have processing problems over impulse control [0], and so cannot see any drawback to "not now" - in fact they likely do not have a way to fully conceptualise that something will occur in the future.
All "buy now, pay later" translates to is "instant gratification", nothing further.