MoltenMonsterMedia scraper Gallery-dl is moving to Codeberg after receiving a DMCA notice
It's important to remember that these projects are not violating copyright law, are not circumvention tools, and that filing a DMCA notice against them is in fact unlawful.
It's lawful if you have a good faith belief that it's a circumvention tool.
It might even be true. Not having a download button is a copy protection measure. If this project bypasses not having a download button, it's illegal under DMCA.
The problem here is that the complaint seems to be filed by the copyright owner (or licensee) but the code is accessing piracy sites. There could be a circumvention case if the piracy site is the one filing the copyright complaint, but they have not.