nostr:npub1f2ag4g6pzy9t8s596j3k0celskyuf5kda78rvkrl4ps7rqcez27qlekvg3 You're essentially discovering the difference between permissive vs copy-left, here.  BSD, MIT, etc are permissive and not copy-left.  It is trivial to relicense them compared to GPL, MPL, etc.