I don't think it was proper for him to disclose if he had intended to do the "Responsible" disclosure dance.
But that's OK, because I believe in full disclosure anyway. Really, it's about time, else this industry isn't going to improve. And dealing with Apple security is a PITA, so yeah, he probably did himself and the world a favour, by exposing the increasing mediocrity and simultaneously saving himself a lot of headache.
Notable is that many of these security holes are seemingly appearing in Apple's later (perhaps less well-tested) code, and are being fixed in subsequent (but beta) builds. The shiny-shiny is where all the work is going now. :(
Biting the hand that feeds IT
