In what appears to be an escalating incursion into a user’s digital privacy, a collective of film companies continue to implore the court to compel Reddit to surrender its users’ personal details. This move is part of an ongoing piracy liability case against Internet Service Providers. Reddit, however, steadfastly resists, staunchly defending its users’ rights to anonymous speech.
IIRC they aren’t prosecuting these users, instead they want to make them be witnesses in a case against an ISP they want to say wasn’t doing enough to stop piracy. The Reddit posts were about whether the ISP takes action against pirates or something like that.
I don’t think ISP’s have any duty to prevent piracy, or anything else for that matter. Their business is providing internet to their customers, not policing each and every action