Real-Debrid, a popular streaming and download service, says it’s implementing far-reaching anti-piracy measures, including hash and keyword filters, in response to a notice from the French Federation of Film Distributors. The API and instantAvailability feature are set for deactivation too, while content from “notorious” pirate sites will be blocked.
Usenet is almost always split rar files, and not all Usenet providers are in the same DMCA covered jurisdictions so instead of sending a takedown to one site you need to send a takedown for 100s of files and to dozens of providers. The takedown requests can often be rejected on the grounds that fjdjwofhxzzoajfnq.r01 isn’t actually the offending copyright material claimed by the notice.
Its possible to do manually but that costs more money and a lot more time, almost all of the requests these days are automated using bots with very little human oversight.