The reason for NetBSD rejecting any use of AI is the concern that a future legal case will rule that the output of LLMs trained on GPL code is itself subject to the GPL due to the viral clause in the licence.
God that would be amazing. How incredible would it be if basically all software was free?
I assume the reason was more generally non-permissive licensing and legal issues? Specifically seeing only copyleft as the problem sounds unreasonably sociopathic, so I assume you picked that out as just one prominent example. (That, or I should take care to steer clear of NetBSD.)