As a person who has been working in payment processing for the past 5 years, I can definitely say: a total norm. I'm impressed they allowed that in the first place.
The adult category is a very touchy one. When one get's an OK to connect to the credit card network he has to go a very arduous procedure of being approved by a CC provider. Because the worst thing that can happen from a viewpoint of a payment provider is a return. At the exact moment when someone asks for a return on a credit card, the provider is the one who is responsible and has to revert the transaction instantly.
(That's why Banks are sooooo lengthy and pushy about you filing those claims. They don't want you to initiate the return.)
Now, if you sell weed, do gambling, sell crypto, do porn or anything else of that sort, you have to pay extra for your card processing, to offset all potential problems for the payment provider.
Problems? What problems? Well, a LOT of transactions for adult content and toys happen on stolen cards. And those cards are not stolen per say. It's just a kid taking parent's CC card, or your SO is using it without your knowledge. Once found, this results in a lot of scandals and quarreling. Followed by a return request. And those returns are very annoying to that. The service "technically" was delivered. But now you are loosing it. And the payments provider does not want to be hit by that.
In fact, this is not a news in the first place. When Kickstarter sign their agreement with the card provider, they specifically stated categories of services they will be responsible for. And I guess porn was not one of them. So what? Now the provider saw a chargeback because of the adult content and did the most standard thing: Went back to the documents, noted the fact that Kickstarter not suppose to be doing adult content, and went back to Kickstarter to tell them to stop.
I handle 2-3 of such cases per month. It's called routine.
But now, enter the world of entertainment. A quick search shows one that Kotaku is a subsidiary of a larger conglamerate G/O Media (Gizmodo - Onion). A private equity company that bought out a bunch of entertainment websites like Gizmodo, Lifehacker and Kotaku. It started in 2019, and went basically bankrupt by 2023. They have been selling their websites to different holdings. In 2025 Kotaku was sold to a Swiss conclamerate that put it into a line of similar useless media resources. And if you check the author - you'll find out that he is a well-established gaming reporter. With little knowledge of the money business.
And then this article makes it to HN.