The &quot;linux developers&quot; aren&#x27;t a single entity.  You&#x27;d need a separate release from theoretically every copyright holder (or a really good legal argument for a subset that defines all the conflicting APIs).<p>The point here was practical, not moral.  Linux, in practice, can&#x27;t relicense the kernel.  Oracle, in practice, can relicense ZFS.  Thus the &quot;magic wand&quot; comment.