> It's not people using stolen cards, it's people feeling shame or regret after making an intentional purchase and using chargebacks to "undo" the purchase

If this problem were as pervasive as people keep saying it is, it would put the merchants out of business long before it would have any noticeable impact on the card brands (Visa, Mastercard) who are typically the ones actually pushing bans like these[0]. Even if the merchant is successful in winning the chargeback, they are the ones who have to pay the fees for it, which means that any business with a predictable and consistently high enough chargeback rate will just stop collecting payments long before the upstream providers care.

A lot of people here don't actually understand how payment processing, risk underwriting, and chargebacks work - which is fair, because it's an arcane area of knowledge that most people don't interact with! But it means that a lot of things which sound like simple and easy explanations are actually completely off base and nonsensical.

[0] I do not have knowledge of the Kickstarter situation specifically, and the article is light on primary-source details, so I am explicitly not commenting on this specific case.