> But if I'm reading the ruling correctly, Anthropic might have been fine even with feeding pirated books into their LLM (as long as they planned to eventually deleted them afterwards)

The court says otherwise.

> Such piracy of otherwise available copies is inherently, irredeemably infringing even if the pirated copies are immediately used for the transformative use and immediately discarded.

Then it says it doesn't need to decide on that basis because they kept it not just for training LLMs, but also for building a central library. Which seems a bit ridiculous, because the sole purpose of the central library is to train LLMs.