I agree with @ossguy in particular because if *we* are copylefting our code (even if assisted by #LLM-backed gen-#AI), we won't face a copyleft claim later.
Furthermore, it is highly unlikely these LLMs are (a) trained on proprietary software, and (b) any proprietary software company that so-trained would later claim infringement.
#Microsoft has all but admitted they refuse to train Copilot on their own code anyway.