yiff.party would not help now, it only leaked Patreon posts. The problem is that Ruffleneck switched from regular uploading site to something (itch.io?) that requires you to be logged in Patreon and had some rank in order to access the file.
Prior that, someone who paid access, only shared link to download site. Several people downloaded the file before Ruffleneck shut it down and at least one of these people bothered to reupload it somewhere else making it available to everyone.
Now sharing the original link is useless, paying customer has to reupload the file first to share that with others.
Not that it's harder, but with less people with access to original file there is less probability of someone bothering to make it available. And second, people who settle on losing their money on porn/digital content are more likely less determined to work around obstacles, like creating burner account on upload site etc - it's not entirely effortless compared to sharing a link.