Or maybe try to solve this with dialogue.
Onagi knows that every content will always end up in places other than where you intended. He can chose to strike things here, and it will be shared in a place harder for him to find, but not so much for people that want the free download, Or he can speak with the mod team and the uploader and set some limits or try to make the situation bring him a positive result.
Other creators with patreon and such frequent the forum and managed to convince some users to become supporters by being nice, answering to feedback and advertising a bit (every content shared here passes through a page asking for the Downloader to support the creator before showing the actual link).
Last, but not least, you could ask the uploader maintaining the thread to withhold from uploading new content for some days. As long as these downloads occur where you can see, you can try to make a lemonade of these lemons instead of smashing them in your own eyes and let the outrage blind you for any opportunity.
In this forum there's still chance of interacting with people. If the links here disappear and the next uploader do so on the chans or other networks, they'll give you the finger or troll you just out of spite