@James Butler - The bandwagon floweth over
Thank you, James, in part for describing a buffer overflow. As a Mac user, I was also concerned about what is possible when this happens on a *nix machine. (I have yet to come across an answer to that question.) However, that was my first comment and it spawned from the hub-bub over which OS is best, secure, etc, etc...
All that has nothing to do with this abysmal article.
My second comment pointedly nailed Goodin's attempt to frame Apple as lax on security, due to infrequent vulnerability notifications and relatively shallow update information. You didn't confuse the two, but you too believe Apple (when applicable) "should STRESS that it [an update] is CRITICAL". Like Goodin, a difference in computing culture gives your opinion.
Apple has never alarmed it's users about updating software - at least not in the ways you have come to expect and advocate. With Apple, an update is an update... Someone invented "critical" updates (probably along with "urgent" emails), but it's ubiquity today is not evidence of a superior notification policy. Developers choose how and when to communicate what (regarding security), based on their understanding of and commitment to their users.
But I digress. Culture aside, both you and Goodin encourage a notification process which is part of a largely failed security policy amongst the Windows industry: tell, tell and tell all (with added meta-data, like "critical" and "optional"). In this age, the practice seems a veritable appendix yearning for removal.
I do understand the call for Apple to incorporate some guidance for users updating their products - in this case, when the fix arrives long after the vulnerability was discovered. Put straight: Apple earns poor marks for a slow response to a vulnerability, not because they neglected to label the fix "critical".
To directly counter your call for Apple to label/prioritize it's updates, consider the impact of similar human-engineering tricks elsewhere (US examples, follow): cigarette warnings, national terror alert levels/color... Need I go on? People will do what they want, no matter the urging, fear-mongering or manipulation (which usually results opposite the desired outcome). So, from this user's perspective, let an update be an update.