In most somewhat-but-not-completely sane places, the part of piracy that is illegal/criminal is distributing the copyrighted material, so downloading it to feed an LLM would already not really be an issue. The “problem” here is that most of these LLMs are used for commercial purposes, which is not allowed, and some claim LLMs are a form of distributing the copyrighted material.

If your LLM is only for personal use, then yeah that’s probably totally fine already, unless you live in one of the completely not sane places where both receiving and distibuting copyrighted material are illegal/criminal.