NetBSD does set such a policy

Posted May 15, 2024 19:09 UTC (Wed) by mirabilos (subscriber, #84359)
In reply to: Parts of Debian dismiss AI-contributions policy by mirabilos
Parent article: Debian dismisses AI-contributions policy

Incidentally, NetBSD concurs, according to https://mastodon.sdf.org/@netbsd/112446618914747900 they now have also set a policy to that effect.