It's unfortunate that there is an alleged 0day in this functionality. I don't know why the author is trying to accuse Apple of having the real goal of "wrestl[ing] control of the system away from it users". SKEL looks like a very good idea to me, and the presence of a bug does not make it any less of a good idea. It's also unclear in what way SKEL is supposed to be taking control away from Apple's users anyway. If anything, it's giving control to the users, because the users now get approval power over any KEXTs.