Actually, from reading the story, it appears that the FSF is feeling hurt because Ubuntu is switching to another open source bootloader that doesn't use the GPL.
Ubuntu has no control over hardware manufacturers putting in a secured BIOS, so Ubuntu decided to take the route of compatibility: Ubuntu signed with Microsoft's key. Ubuntu has their own key as well.
Just as software developers have the right to NOT open source their code, companies have the right to secure their computers. This step allows Ubuntu to run on those secured computers.