I would disagree this is a different issue, one leads to the other. Mozilla wants to make sure that any addon the user can possibly installed is something they

I would disagree this is a different issue, one leads to the other. Mozilla wants to make sure that any addon the user can possibly installed is something they can trust. Including addons that other applications install (ie AV toolbars). If you don't like that, you can use the unbranded version of firefox or the dev edition.