what- huh- whats going on??
Apparently a pro-censorship anti-porn group called Collective Shout has lobbied Stripe and Paypal to not accept money for websites that have adult material on them. This has caused smaller companies like itch.io to delist adult games until they can get payments back.
https://en.wikipedia.org/wiki/Collective_Shout
https://itch.io/updates/update-on-nsfw-content
Itch.io basically de-listed any sort of NSFW games from the store, people complained, then Itch.io magically found a spine and re-listed what was on the store, though the developer Nomax (who made the game called Conway) on Itch.io also commented the statement in a thread, "Conway and other NSFW games currently can't accept donations if we want to be visible on the site."
So it seems like Itch.io, the payment processors, or some combination of the two is fully intent on keeping NSFW works from making any kind of money.