Excuse me but this only affects nsfw games that have any payment options including donations enabled on itch.io, offsite donations does not affect the games: https://itch.io/t/5149036/reindexing-adult-nsfw-content
We're going to be releasing a FREE NSFW version on our patreon. Unfortunately, itch will not be a safe house for NSFW games in the near future. We won't be able to sell it here, so it makes more sense to direct people to where we can sell it. We love the platform but the impact of losing the donations isn't the worst, the reach is the worst and we have no guarantee that they won't change the rules again, affecting us even more. I'm sorry it has come to this, but we'll make sure people still have access to free nsfw versions.