Piracy is usually frowned upon in FOSS communities, regardless of the financial benefit (or lack of) to the pirate. Usually disclosing piracy is required for the kernel, as unlicensed code weakens the entire foundation of the GPL it was built on, and opens the door to companies legally ignoring this license themselves. This has the potential to handicap the entire FOSS community, most consider that more important than a couple bugs some vibe coder desperately wants to introduce.