LLMs are interesting because they can combine things they learn from multiple projects into a new language that doesn't feature in any of them, and pick up details from your request.
Unless you're schizophrenic enough to insist that you never even see other code it's just not a realistic problem
Honestly I've had big arguments about this IP stuff before and unless you actually have a lawyer specifically go after something or very obviously violate the GPL it's just a tactic for people to slow people they don't like down. People find a way to invent HR departments fractally.